Refactor BooleanAction to mimic golang interface

* Change all store_true or store_false to use store_bool.
  New behavior documented in BooleanAction docstring.
* Remove any extraneous code identified by pylint in files from above.

Fixes #1869

Signed-off-by: Jhon Honce <jhonce@redhat.com>

31 files changed, 198 insertions, 254 deletions

diff --git a/contrib/python/pypodman/Makefile b/contrib/python/pypodman/Makefile
index 272145c5d..230eee44d 100644
--- a/contrib/python/pypodman/Makefile
+++ b/contrib/python/pypodman/Makefile
@@ -1,6 +1,6 @@
 PYTHON ?= $(shell command -v python3 2>/dev/null || command -v python)
 DESTDIR := /
-PODMAN_VERSION ?= '0.0.4'
+PODMAN_VERSION ?= '0.11.1.1'
 
 .PHONY: python-pypodman
 python-pypodman:
@@ -22,7 +22,7 @@ install:
 
 .PHONY: upload
 upload:
-	$(PODMAN_VERSION) $(PYTHON) setup.py sdist bdist_wheel
+	PODMAN_VERSION=$(PODMAN_VERSION) $(PYTHON) setup.py sdist bdist_wheel
 	twine upload --repository-url https://test.pypi.org/legacy/ dist/*
 
 .PHONY: clobber
diff --git a/contrib/python/pypodman/pypodman/lib/__init__.py b/contrib/python/pypodman/pypodman/lib/__init__.py
index be1b5f467..d9a434254 100644
--- a/contrib/python/pypodman/pypodman/lib/__init__.py
+++ b/contrib/python/pypodman/pypodman/lib/__init__.py
@@ -3,18 +3,17 @@ import sys
 
 import podman
 from pypodman.lib.action_base import AbstractActionBase
-from pypodman.lib.parser_actions import (BooleanAction, BooleanValidate,
-                                         ChangeAction, PathAction,
-                                         PositiveIntAction, UnitAction)
+from pypodman.lib.parser_actions import (ChangeAction, PathAction,
+                                         PositiveIntAction, SignalAction,
+                                         UnitAction)
 from pypodman.lib.podman_parser import PodmanArgumentParser
 from pypodman.lib.report import Report, ReportColumn
 
 # Silence pylint overlording...
-assert BooleanAction
-assert BooleanValidate
 assert ChangeAction
 assert PathAction
 assert PositiveIntAction
+assert SignalAction
 assert UnitAction
 
 __all__ = [
diff --git a/contrib/python/pypodman/pypodman/lib/action_base.py b/contrib/python/pypodman/pypodman/lib/action_base.py
index a950c362b..5cba7ac5c 100644
--- a/contrib/python/pypodman/pypodman/lib/action_base.py
+++ b/contrib/python/pypodman/pypodman/lib/action_base.py
@@ -17,29 +17,21 @@ class AbstractActionBase(abc.ABC):
         Use set_defaults() to set attributes "class_" and "method". These will
         be invoked as class_(parsed_args).method()
         """
-        parent.add_argument(
+        parent.add_flag(
             '--all',
-            action='store_true',
-            help=('list all items.'
-                  ' (default: no-op, included for compatibility.)'))
-        parent.add_argument(
-            '--no-trunc',
-            '--notruncate',
-            action='store_false',
-            dest='truncate',
+            help='list all items.')
+        parent.add_flag(
+            '--truncate',
+            '--trunc',
             default=True,
-            help='Display extended information. (default: False)')
-        parent.add_argument(
-            '--noheading',
-            action='store_false',
-            dest='heading',
+            help="Truncate id's and other long fields.")
+        parent.add_flag(
+            '--heading',
             default=True,
-            help=('Omit the table headings from the output.'
-                  ' (default: False)'))
-        parent.add_argument(
+            help='Include table headings in the output.')
+        parent.add_flag(
             '--quiet',
-            action='store_true',
-            help='List only the IDs. (default: %(default)s)')
+            help='List only the IDs.')
 
     def __init__(self, args):
         """Construct class."""
diff --git a/contrib/python/pypodman/pypodman/lib/actions/_create_args.py b/contrib/python/pypodman/pypodman/lib/actions/_create_args.py
index 207f52796..8ab4292e8 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/_create_args.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/_create_args.py
@@ -1,6 +1,6 @@
 """Implement common create container arguments together."""
 
-from pypodman.lib import BooleanAction, UnitAction
+from pypodman.lib import SignalAction, UnitAction
 
 
 class CreateArguments():
@@ -108,11 +108,9 @@ class CreateArguments():
             metavar='NODES',
             help=('Memory nodes (MEMs) in which to allow execution (0-3, 0,1).'
                   ' Only effective on NUMA systems'))
-        parser.add_argument(
+        parser.add_flag(
             '--detach',
             '-d',
-            action=BooleanAction,
-            default=False,
             help='Detached mode: run the container in the background and'
             ' print the new container ID. (default: False)')
         parser.add_argument(
@@ -218,7 +216,7 @@ class CreateArguments():
 
         # only way for argparse to handle these options.
         vol_args = {
-            'choices': ['bind', 'tmpfs', 'ignore'],
+            'choices': ('bind', 'tmpfs', 'ignore'),
             'metavar': 'MODE',
             'type': str.lower,
             'help': 'Tells podman how to handle the builtin image volumes',
@@ -228,12 +226,10 @@ class CreateArguments():
         volume_group.add_argument('--image-volume', **vol_args)
         volume_group.add_argument('--builtin-volume', **vol_args)
 
-        parser.add_argument(
+        parser.add_flag(
             '--interactive',
             '-i',
-            action=BooleanAction,
-            default=False,
-            help='Keep STDIN open even if not attached. (default: False)')
+            help='Keep STDIN open even if not attached.')
         parser.add_argument('--ipc', help='Create namespace')
         parser.add_argument(
             '--kernel-memory', action=UnitAction, help='Kernel memory limit')
@@ -278,10 +274,9 @@ class CreateArguments():
             metavar='BRIDGE',
             help='Set the Network mode for the container.'
             ' (format: bridge, host, container:UUID, ns:PATH, none)')
-        parser.add_argument(
+        parser.add_flag(
             '--oom-kill-disable',
-            action=BooleanAction,
-            help='Whether to disable OOM Killer for the container or not')
+            help='Whether to disable OOM Killer for the container or not.')
         parser.add_argument(
             '--oom-score-adj',
             choices=range(-1000, 1000),
@@ -298,41 +293,33 @@ class CreateArguments():
             help=("Tune the container's pids limit."
                   " Set -1 to have unlimited pids for the container."))
         parser.add_argument('--pod', help='Run container in an existing pod')
-        parser.add_argument(
+        parser.add_flag(
             '--privileged',
-            action=BooleanAction,
             help='Give extended privileges to this container.')
         parser.add_argument(
             '--publish',
             '-p',
             metavar='RANGE',
             help="Publish a container's port, or range of ports, to the host")
-        parser.add_argument(
+        parser.add_flag(
             '--publish-all',
             '-P',
-            action=BooleanAction,
             help='Publish all exposed ports to random'
-            ' ports on the host interfaces'
-            '(default: False)')
-        parser.add_argument(
+            ' ports on the host interfaces.')
+        parser.add_flag(
             '--quiet',
             '-q',
-            action='store_true',
             help='Suppress output information when pulling images')
-        parser.add_argument(
+        parser.add_flag(
             '--read-only',
-            action=BooleanAction,
             help="Mount the container's root filesystem as read only.")
-        parser.add_argument(
+        parser.add_flag(
             '--rm',
-            action=BooleanAction,
-            default=False,
             help='Automatically remove the container when it exits.')
         parser.add_argument(
             '--rootfs',
-            action='store_true',
-            help=('If specified, the first argument refers to an'
-                  ' exploded container on the file system of remote host.'))
+            help='If specified, the first argument refers to an'
+            ' exploded container on the file system of remote host.')
         parser.add_argument(
             '--security-opt',
             action='append',
@@ -340,15 +327,14 @@ class CreateArguments():
             help='Set security options.')
         parser.add_argument(
             '--shm-size', action=UnitAction, help='Size of /dev/shm')
-        parser.add_argument(
+        parser.add_flag(
             '--sig-proxy',
-            action=BooleanAction,
-            default=True,
             help='Proxy signals sent to the podman run'
             ' command to the container process')
         parser.add_argument(
             '--stop-signal',
-            metavar='SIGTERM',
+            action=SignalAction,
+            default='TERM',
             help='Signal to stop a container')
         parser.add_argument(
             '--stop-timeout',
@@ -374,11 +360,9 @@ class CreateArguments():
             metavar='MOUNT',
             help='Create a tmpfs mount.'
             ' (default: rw,noexec,nosuid,nodev,size=65536k.)')
-        parser.add_argument(
+        parser.add_flag(
             '--tty',
             '-t',
-            action=BooleanAction,
-            default=False,
             help='Allocate a pseudo-TTY for standard input of container.')
         parser.add_argument(
             '--uidmap',
@@ -394,15 +378,16 @@ class CreateArguments():
         parser.add_argument(
             '--user',
             '-u',
-            help=('Sets the username or UID used and optionally'
-                  ' the groupname or GID for the specified command.'))
+            help='Sets the username or UID used and optionally'
+            ' the groupname or GID for the specified command.')
         parser.add_argument(
             '--userns',
             metavar='NAMESPACE',
             help='Set the user namespace mode for the container')
         parser.add_argument(
             '--uts',
-            choices=['host', 'ns'],
+            choices=('host', 'ns'),
+            type=str.lower,
             help='Set the UTS mode for the container')
         parser.add_argument('--volume', '-v', help='Create a bind mount.')
         parser.add_argument(
diff --git a/contrib/python/pypodman/pypodman/lib/actions/commit_action.py b/contrib/python/pypodman/pypodman/lib/actions/commit_action.py
index 21924e938..c166e1aff 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/commit_action.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/commit_action.py
@@ -2,7 +2,7 @@
 import sys
 
 import podman
-from pypodman.lib import AbstractActionBase, BooleanAction, ChangeAction
+from pypodman.lib import AbstractActionBase, ChangeAction
 
 
 class Commit(AbstractActionBase):
@@ -44,17 +44,14 @@ class Commit(AbstractActionBase):
             help='Set commit message for committed image'
             ' (Only on docker images.)',
         )
-        parser.add_argument(
+        parser.add_flag(
             '--pause',
             '-p',
-            action=BooleanAction,
-            default=True,
             help='Pause the container when creating an image',
         )
-        parser.add_argument(
+        parser.add_flag(
             '--quiet',
             '-q',
-            action='store_true',
             help='Suppress output',
         )
         parser.add_argument(
diff --git a/contrib/python/pypodman/pypodman/lib/actions/history_action.py b/contrib/python/pypodman/pypodman/lib/actions/history_action.py
index f9aaa54f6..76c3ad756 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/history_action.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/history_action.py
@@ -5,8 +5,7 @@ from collections import OrderedDict
 import humanize
 
 import podman
-from pypodman.lib import (AbstractActionBase, BooleanAction, Report,
-                          ReportColumn)
+from pypodman.lib import AbstractActionBase, Report, ReportColumn
 
 
 class History(AbstractActionBase):
@@ -17,13 +16,10 @@ class History(AbstractActionBase):
         """Add History command to parent parser."""
         parser = parent.add_parser('history', help='report image history')
         super().subparser(parser)
-        parser.add_argument(
+        parser.add_flag(
             '--human',
             '-H',
-            action=BooleanAction,
-            default='True',
-            help='Display sizes and dates in human readable format.'
-            ' (default: %(default)s)')
+            help='Display sizes and dates in human readable format.')
         parser.add_argument(
             '--format',
             choices=('json', 'table'),
diff --git a/contrib/python/pypodman/pypodman/lib/actions/images_action.py b/contrib/python/pypodman/pypodman/lib/actions/images_action.py
index 29bf90dd2..21376eeeb 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/images_action.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/images_action.py
@@ -24,11 +24,9 @@ class Images(AbstractActionBase):
             help=('Change sort ordered of displayed images.'
                   ' (default: %(default)s)'))
 
-        group = parser.add_mutually_exclusive_group()
-        group.add_argument(
+        parser.add_flag(
             '--digests',
-            action='store_true',
-            help='Include digests with images. (default: %(default)s)')
+            help='Include digests with images.')
         parser.set_defaults(class_=cls, method='list')
 
     def __init__(self, args):
diff --git a/contrib/python/pypodman/pypodman/lib/actions/info_action.py b/contrib/python/pypodman/pypodman/lib/actions/info_action.py
index 988284541..3c854a358 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/info_action.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/info_action.py
@@ -22,10 +22,6 @@ class Info(AbstractActionBase):
             " (default: yaml)")
         parser.set_defaults(class_=cls, method='info')
 
-    def __init__(self, args):
-        """Construct Info class."""
-        super().__init__(args)
-
     def info(self):
         """Report on Podman Service."""
         try:
diff --git a/contrib/python/pypodman/pypodman/lib/actions/inspect_action.py b/contrib/python/pypodman/pypodman/lib/actions/inspect_action.py
index a581e7e4e..ca5ad2215 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/inspect_action.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/inspect_action.py
@@ -22,12 +22,9 @@ class Inspect(AbstractActionBase):
             type=str.lower,
             help='Type of object to inspect',
         )
-        parser.add_argument(
+        parser.add_flag(
             '--size',
-            action='store_true',
-            default=False,
-            help='Display the total file size if the type is a container.'
-            ' Always True.')
+            help='Display the total file size if the type is a container.')
         parser.add_argument(
             'objects',
             nargs='+',
@@ -35,10 +32,6 @@ class Inspect(AbstractActionBase):
         )
         parser.set_defaults(class_=cls, method='inspect')
 
-    def __init__(self, args):
-        """Construct Inspect class."""
-        super().__init__(args)
-
     def _get_container(self, ident):
         try:
             logging.debug("Getting container %s", ident)
diff --git a/contrib/python/pypodman/pypodman/lib/actions/kill_action.py b/contrib/python/pypodman/pypodman/lib/actions/kill_action.py
index cb3d3f035..e8fb4e74d 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/kill_action.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/kill_action.py
@@ -1,9 +1,8 @@
 """Remote client command for signaling podman containers."""
-import signal
 import sys
 
 import podman
-from pypodman.lib import AbstractActionBase
+from pypodman.lib import AbstractActionBase, SignalAction
 
 
 class Kill(AbstractActionBase):
@@ -16,10 +15,9 @@ class Kill(AbstractActionBase):
         parser.add_argument(
             '--signal',
             '-s',
-            choices=range(1, signal.NSIG),
-            metavar='[1,{}]'.format(signal.NSIG),
+            action=SignalAction,
             default=9,
-            help='Signal to send to the container. (default: 9)')
+            help='Signal to send to the container. (default: %(default)s)')
         parser.add_argument(
             'containers',
             nargs='+',
@@ -27,10 +25,6 @@ class Kill(AbstractActionBase):
         )
         parser.set_defaults(class_=cls, method='kill')
 
-    def __init__(self, args):
-        """Construct Kill class."""
-        super().__init__(args)
-
     def kill(self):
         """Signal provided containers."""
         try:
diff --git a/contrib/python/pypodman/pypodman/lib/actions/pause_action.py b/contrib/python/pypodman/pypodman/lib/actions/pause_action.py
index ab64d8b81..7dc02f7fe 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/pause_action.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/pause_action.py
@@ -19,10 +19,6 @@ class Pause(AbstractActionBase):
         )
         parser.set_defaults(class_=cls, method='pause')
 
-    def __init__(self, args):
-        """Construct Pause class."""
-        super().__init__(args)
-
     def pause(self):
         """Pause provided containers."""
         try:
diff --git a/contrib/python/pypodman/pypodman/lib/actions/pod/create_parser.py b/contrib/python/pypodman/pypodman/lib/actions/pod/create_parser.py
index 46c1e3e51..4e0bde777 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/pod/create_parser.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/pod/create_parser.py
@@ -2,7 +2,7 @@
 import sys
 
 import podman
-from pypodman.lib import AbstractActionBase, BooleanAction
+from pypodman.lib import AbstractActionBase
 
 
 class CreatePod(AbstractActionBase):
@@ -20,12 +20,9 @@ class CreatePod(AbstractActionBase):
             type=str,
             help='Path to cgroups under which the'
             ' cgroup for the pod will be created.')
-        parser.add_argument(
+        parser.add_flag(
             '--infra',
-            action=BooleanAction,
-            default=True,
-            help='Create an infra container and associate it with the pod'
-            '(default: %(default)s)')
+            help='Create an infra container and associate it with the pod.')
         parser.add_argument(
             '-l',
             '--label',
diff --git a/contrib/python/pypodman/pypodman/lib/actions/pod/kill_parser.py b/contrib/python/pypodman/pypodman/lib/actions/pod/kill_parser.py
index 430ec34e0..9b6229939 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/pod/kill_parser.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/pod/kill_parser.py
@@ -3,7 +3,7 @@ import signal
 import sys
 
 import podman
-from pypodman.lib import AbstractActionBase
+from pypodman.lib import AbstractActionBase, SignalAction
 from pypodman.lib import query_model as query_pods
 
 
@@ -15,18 +15,16 @@ class KillPod(AbstractActionBase):
         """Add Pod Kill command to parent parser."""
         parser = parent.add_parser('kill', help='signal containers in pod')
 
-        parser.add_argument(
-            '-a',
+        parser.add_flag(
             '--all',
-            action='store_true',
-            help='Sends signal to all pods')
+            '-a',
+            help='Sends signal to all pods.')
         parser.add_argument(
             '-s',
             '--signal',
-            choices=range(1, signal.NSIG),
-            metavar='[1,{}]'.format(signal.NSIG),
+            action=SignalAction,
             default=9,
-            help='Signal to send to the pod. (default: 9)')
+            help='Signal to send to the pod. (default: %(default)s)')
         parser.add_argument('pod', nargs='*', help='pod(s) to signal')
         parser.set_defaults(class_=cls, method='kill')
 
diff --git a/contrib/python/pypodman/pypodman/lib/actions/pod/pause_parser.py b/contrib/python/pypodman/pypodman/lib/actions/pod/pause_parser.py
index daae028d4..c751314ca 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/pod/pause_parser.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/pod/pause_parser.py
@@ -13,8 +13,10 @@ class PausePod(AbstractActionBase):
     def subparser(cls, parent):
         """Add Pod Pause command to parent parser."""
         parser = parent.add_parser('pause', help='pause containers in pod')
-        parser.add_argument(
-            '-a', '--all', action='store_true', help='Pause all pods')
+        parser.add_flag(
+            '--all',
+            '-a',
+            help='Pause all pods.')
         parser.add_argument('pod', nargs='*', help='pod(s) to pause.')
         parser.set_defaults(class_=cls, method='pause')
 
diff --git a/contrib/python/pypodman/pypodman/lib/actions/pod/processes_parser.py b/contrib/python/pypodman/pypodman/lib/actions/pod/processes_parser.py
index ecfcb883a..855e313c7 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/pod/processes_parser.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/pod/processes_parser.py
@@ -14,18 +14,15 @@ class ProcessesPod(AbstractActionBase):
         parser = parent.add_parser('ps', help='list processes of pod')
         super().subparser(parser)
 
-        parser.add_argument(
+        parser.add_flag(
             '--ctr-names',
-            action='store_true',
-            help='Include container name in the info field')
-        parser.add_argument(
+            help='Include container name in the info field.')
+        parser.add_flag(
             '--ctr-ids',
-            action='store_true',
-            help='Include container ID in the info field')
-        parser.add_argument(
+            help='Include container ID in the info field.')
+        parser.add_flag(
             '--ctr-status',
-            action='store_true',
-            help='Include container status in the info field')
+            help='Include container status in the info field.')
         parser.add_argument(
             '--format',
             choices=('json'),
diff --git a/contrib/python/pypodman/pypodman/lib/actions/pod/remove_parser.py b/contrib/python/pypodman/pypodman/lib/actions/pod/remove_parser.py
index 40eeb7203..289325d14 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/pod/remove_parser.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/pod/remove_parser.py
@@ -13,13 +13,14 @@ class RemovePod(AbstractActionBase):
     def subparser(cls, parent):
         """Add Pod Rm command to parent parser."""
         parser = parent.add_parser('rm', help='Delete pod and container(s)')
-        parser.add_argument(
-            '-a', '--all', action='store_true', help='Remove all pods')
-        parser.add_argument(
-            '-f',
+        parser.add_flag(
+            '--all',
+            '-a',
+            help='Remove all pods.')
+        parser.add_flag(
             '--force',
-            action='store_true',
-            help='Stop and remove container(s) then delete pod')
+            '-f',
+            help='Stop and remove container(s) then delete pod.')
         parser.add_argument(
             'pod', nargs='*', help='Pod to remove. Or, use --all')
         parser.set_defaults(class_=cls, method='remove')
diff --git a/contrib/python/pypodman/pypodman/lib/actions/pod/restart_parser.py b/contrib/python/pypodman/pypodman/lib/actions/pod/restart_parser.py
index af489ad28..53f45b6de 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/pod/restart_parser.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/pod/restart_parser.py
@@ -13,8 +13,10 @@ class RestartPod(AbstractActionBase):
     def subparser(cls, parent):
         """Add Pod Restart command to parent parser."""
         parser = parent.add_parser('restart', help='restart containers in pod')
-        parser.add_argument(
-            '-a', '--all', action='store_true', help='Restart all pods')
+        parser.add_flag(
+            '--all',
+            '-a',
+            help='Restart all pods.')
         parser.add_argument(
             'pod', nargs='*', help='Pod to restart. Or, use --all')
         parser.set_defaults(class_=cls, method='restart')
diff --git a/contrib/python/pypodman/pypodman/lib/actions/pod/start_parser.py b/contrib/python/pypodman/pypodman/lib/actions/pod/start_parser.py
index 0ddc336bf..ff62b839e 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/pod/start_parser.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/pod/start_parser.py
@@ -14,8 +14,10 @@ class StartPod(AbstractActionBase):
     def subparser(cls, parent):
         """Add Pod Start command to parent parser."""
         parser = parent.add_parser('start', help='start pod')
-        parser.add_argument(
-            '-a', '--all', action='store_true', help='Start all pods')
+        parser.add_flag(
+            '--all',
+            '-a',
+            help='Start all pods.')
         parser.add_argument(
             'pod', nargs='*', help='Pod to start. Or, use --all')
         parser.set_defaults(class_=cls, method='start')
diff --git a/contrib/python/pypodman/pypodman/lib/actions/pod/stop_parser.py b/contrib/python/pypodman/pypodman/lib/actions/pod/stop_parser.py
index 7054fd38a..cbf2bf1e7 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/pod/stop_parser.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/pod/stop_parser.py
@@ -13,8 +13,10 @@ class StopPod(AbstractActionBase):
     def subparser(cls, parent):
         """Add Pod Stop command to parent parser."""
         parser = parent.add_parser('stop', help='stop pod')
-        parser.add_argument(
-            '-a', '--all', action='store_true', help='Stop all pods')
+        parser.add_flag(
+            '--all',
+            '-a',
+            help='Stop all pods.')
         parser.add_argument(
             'pod', nargs='*', help='Pod to stop. Or, use --all')
         parser.set_defaults(class_=cls, method='stop')
diff --git a/contrib/python/pypodman/pypodman/lib/actions/pod/unpause_parser.py b/contrib/python/pypodman/pypodman/lib/actions/pod/unpause_parser.py
index 90e1ddbe2..5186cf9cc 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/pod/unpause_parser.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/pod/unpause_parser.py
@@ -13,8 +13,10 @@ class UnpausePod(AbstractActionBase):
     def subparser(cls, parent):
         """Add Pod Unpause command to parent parser."""
         parser = parent.add_parser('unpause', help='unpause pod')
-        parser.add_argument(
-            '-a', '--all', action='store_true', help='Unpause all pods')
+        parser.add_flag(
+            '--all',
+            '-a',
+            help='Unpause all pods.')
         parser.add_argument(
             'pod', nargs='*', help='Pod to unpause. Or, use --all')
         parser.set_defaults(class_=cls, method='unpause')
diff --git a/contrib/python/pypodman/pypodman/lib/actions/pod_action.py b/contrib/python/pypodman/pypodman/lib/actions/pod_action.py
index 046af34bb..4b8997a05 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/pod_action.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/pod_action.py
@@ -5,6 +5,8 @@ import sys
 
 from pypodman.lib import AbstractActionBase
 
+# pylint: disable=wildcard-import
+# pylint: disable=unused-wildcard-import
 from .pod import *
 
 
diff --git a/contrib/python/pypodman/pypodman/lib/actions/port_action.py b/contrib/python/pypodman/pypodman/lib/actions/port_action.py
index d2a8ded46..6913f3813 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/port_action.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/port_action.py
@@ -13,16 +13,13 @@ class Port(AbstractActionBase):
         """Add Port command to parent parser."""
         parser = parent.add_parser(
             'port', help='retrieve ports from containers')
-        parser.add_argument(
+        parser.add_flag(
             '--all',
             '-a',
-            action='store_true',
-            default=False,
             help='List all known port mappings for running containers')
         parser.add_argument(
             'containers',
             nargs='*',
-            default=None,
             help='containers to list ports',
         )
         parser.set_defaults(class_=cls, method='port')
@@ -61,3 +58,4 @@ class Port(AbstractActionBase):
                 file=sys.stderr,
                 flush=True)
             return 1
+        return 0
diff --git a/contrib/python/pypodman/pypodman/lib/actions/push_action.py b/contrib/python/pypodman/pypodman/lib/actions/push_action.py
index 0030cb5b9..8e86ca335 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/push_action.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/push_action.py
@@ -15,12 +15,10 @@ class Push(AbstractActionBase):
             'push',
             help='push image elsewhere',
         )
-        parser.add_argument(
+        parser.add_flag(
             '--tlsverify',
-            action='store_true',
-            default=True,
             help='Require HTTPS and verify certificates when'
-            ' contacting registries (default: %(default)s)')
+            ' contacting registries.')
         parser.add_argument(
             'image', nargs=1, help='name or id of image to push')
         parser.add_argument(
@@ -30,10 +28,6 @@ class Push(AbstractActionBase):
         )
         parser.set_defaults(class_=cls, method='push')
 
-    def __init__(self, args):
-        """Construct Push class."""
-        super().__init__(args)
-
     def pull(self):
         """Store image elsewhere."""
         try:
diff --git a/contrib/python/pypodman/pypodman/lib/actions/restart_action.py b/contrib/python/pypodman/pypodman/lib/actions/restart_action.py
index d99d1ad65..415594920 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/restart_action.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/restart_action.py
@@ -23,10 +23,6 @@ class Restart(AbstractActionBase):
             'targets', nargs='+', help='container id(s) to restart')
         parser.set_defaults(class_=cls, method='restart')
 
-    def __init__(self, args):
-        """Construct Restart class."""
-        super().__init__(args)
-
     def restart(self):
         """Restart container(s)."""
         try:
diff --git a/contrib/python/pypodman/pypodman/lib/actions/rm_action.py b/contrib/python/pypodman/pypodman/lib/actions/rm_action.py
index e8074ef4e..99ff6c460 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/rm_action.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/rm_action.py
@@ -12,20 +12,14 @@ class Rm(AbstractActionBase):
     def subparser(cls, parent):
         """Add Rm command to parent parser."""
         parser = parent.add_parser('rm', help='delete container(s)')
-        parser.add_argument(
-            '-f',
+        parser.add_flag(
             '--force',
-            action='store_true',
-            help=('force delete of running container(s).'
-                  ' (default: %(default)s)'))
+            '-f',
+            help='force delete of running container(s).')
         parser.add_argument(
             'targets', nargs='+', help='container id(s) to delete')
         parser.set_defaults(class_=cls, method='remove')
 
-    def __init__(self, args):
-        """Construct Rm class."""
-        super().__init__(args)
-
     def remove(self):
         """Remove container(s)."""
         for ident in self._args.targets:
diff --git a/contrib/python/pypodman/pypodman/lib/actions/rmi_action.py b/contrib/python/pypodman/pypodman/lib/actions/rmi_action.py
index c6ba835cb..7c3d0bd79 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/rmi_action.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/rmi_action.py
@@ -12,19 +12,13 @@ class Rmi(AbstractActionBase):
     def subparser(cls, parent):
         """Add Rmi command to parent parser."""
         parser = parent.add_parser('rmi', help='delete image(s)')
-        parser.add_argument(
-            '-f',
+        parser.add_flag(
             '--force',
-            action='store_true',
-            help=('force delete of image(s) and associated containers.'
-                  ' (default: %(default)s)'))
+            '-f',
+            help='force delete of image(s) and associated containers.')
         parser.add_argument('targets', nargs='+', help='image id(s) to delete')
         parser.set_defaults(class_=cls, method='remove')
 
-    def __init__(self, args):
-        """Construct Rmi class."""
-        super().__init__(args)
-
     def remove(self):
         """Remove image(s)."""
         for ident in self._args.targets:
diff --git a/contrib/python/pypodman/pypodman/lib/actions/search_action.py b/contrib/python/pypodman/pypodman/lib/actions/search_action.py
index d2a585d92..b7b8b465d 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/search_action.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/search_action.py
@@ -4,8 +4,8 @@ import sys
 from collections import OrderedDict
 
 import podman
-from pypodman.lib import (AbstractActionBase, BooleanValidate,
-                          PositiveIntAction, Report, ReportColumn)
+from pypodman.lib import (AbstractActionBase, PositiveIntAction, Report,
+                          ReportColumn)
 
 
 class FilterAction(argparse.Action):
@@ -58,16 +58,16 @@ class FilterAction(argparse.Action):
             if val < 0:
                 parser.error(msg)
         elif opt == 'is-automated':
-            try:
-                val = BooleanValidate()(val)
-            except ValueError:
+            if val.capitalize() in ('True', 'False'):
+                val = bool(val)
+            else:
                 msg = ('{} option "is-automated"'
                        ' must be True or False.'.format(self.dest))
                 parser.error(msg)
         elif opt == 'is-official':
-            try:
-                val = BooleanValidate()(val)
-            except ValueError:
+            if val.capitalize() in ('True', 'False'):
+                val = bool(val)
+            else:
                 msg = ('{} option "is-official"'
                        ' must be True or False.'.format(self.dest))
                 parser.error(msg)
diff --git a/contrib/python/pypodman/pypodman/lib/actions/start_action.py b/contrib/python/pypodman/pypodman/lib/actions/start_action.py
index f312fb3fa..5f88731dc 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/start_action.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/start_action.py
@@ -2,7 +2,7 @@
 import sys
 
 import podman
-from pypodman.lib import AbstractActionBase, BooleanAction
+from pypodman.lib import AbstractActionBase
 
 
 class Start(AbstractActionBase):
@@ -12,12 +12,10 @@ class Start(AbstractActionBase):
     def subparser(cls, parent):
         """Add Start command to parent parser."""
         parser = parent.add_parser('start', help='start container')
-        parser.add_argument(
+        parser.add_flag(
             '--attach',
             '-a',
-            action=BooleanAction,
-            default=False,
-            help="Attach container's STDOUT and STDERR (default: %(default)s)")
+            help="Attach container's STDOUT and STDERR.")
         parser.add_argument(
             '--detach-keys',
             metavar='KEY(s)',
@@ -25,18 +23,14 @@ class Start(AbstractActionBase):
             help='Override the key sequence for detaching a container.'
             ' (format: a single character [a-Z] or ctrl-<value> where'
             ' <value> is one of: a-z, @, ^, [, , or _) (default: ^D)')
-        parser.add_argument(
+        parser.add_flag(
             '--interactive',
             '-i',
-            action=BooleanAction,
-            default=False,
-            help="Attach container's STDIN (default: %(default)s)")
+            help="Attach container's STDIN.")
         # TODO: Implement sig-proxy
-        parser.add_argument(
+        parser.add_flag(
             '--sig-proxy',
-            action=BooleanAction,
-            default=False,
-            help="Proxy received signals to the process (default: %(default)s)"
+            help="Proxy received signals to the process."
         )
         parser.add_argument(
             'containers',
@@ -74,3 +68,4 @@ class Start(AbstractActionBase):
                 file=sys.stderr,
                 flush=True)
             return 1
+        return 0
diff --git a/contrib/python/pypodman/pypodman/lib/actions/version_action.py b/contrib/python/pypodman/pypodman/lib/actions/version_action.py
index 12b6dc576..29a0cabe4 100644
--- a/contrib/python/pypodman/pypodman/lib/actions/version_action.py
+++ b/contrib/python/pypodman/pypodman/lib/actions/version_action.py
@@ -1,9 +1,7 @@
 """Remote client command for reporting on Podman service."""
-import json
 import sys
 
 import podman
-import yaml
 from pypodman.lib import AbstractActionBase
 
 
@@ -17,10 +15,6 @@ class Version(AbstractActionBase):
             'version', help='report version on podman service')
         parser.set_defaults(class_=cls, method='version')
 
-    def __init__(self, args):
-        """Construct Version class."""
-        super().__init__(args)
-
     def version(self):
         """Report on Podman Service."""
         try:
diff --git a/contrib/python/pypodman/pypodman/lib/parser_actions.py b/contrib/python/pypodman/pypodman/lib/parser_actions.py
index 77ee14761..3ff12cab8 100644
--- a/contrib/python/pypodman/pypodman/lib/parser_actions.py
+++ b/contrib/python/pypodman/pypodman/lib/parser_actions.py
@@ -6,6 +6,7 @@ The constructors are very verbose but remain for IDE support.
 import argparse
 import copy
 import os
+import signal
 
 # API defined by argparse.Action therefore shut up pylint
 # pragma pylint: disable=redefined-builtin
@@ -13,22 +14,8 @@ import os
 # pragma pylint: disable=too-many-arguments
 
 
-class BooleanValidate():
-    """Validate value is boolean string."""
-
-    def __call__(self, value):
-        """Return True, False or raise ValueError."""
-        val = value.capitalize()
-        if val == 'False':
-            return False
-        elif val == 'True':
-            return True
-        else:
-            raise ValueError('"{}" is not True or False'.format(value))
-
-
-class BooleanAction(argparse.Action):
-    """Convert and validate bool argument."""
+class ChangeAction(argparse.Action):
+    """Convert and validate change argument."""
 
     def __init__(self,
                  option_strings,
@@ -40,8 +27,13 @@ class BooleanAction(argparse.Action):
                  choices=None,
                  required=False,
                  help=None,
-                 metavar='{True,False}'):
-        """Create BooleanAction object."""
+                 metavar='OPT=VALUE'):
+        """Create ChangeAction object."""
+        help = (help or '') + ('Apply change(s) to the new image.'
+                               ' May be given multiple times.')
+        if default is None:
+            default = []
+
         super().__init__(
             option_strings=option_strings,
             dest=dest,
@@ -56,32 +48,37 @@ class BooleanAction(argparse.Action):
 
     def __call__(self, parser, namespace, values, option_string=None):
         """Convert and Validate input."""
-        try:
-            val = BooleanValidate()(values)
-        except ValueError:
-            parser.error('"{}" must be True or False.'.format(option_string))
-        else:
-            setattr(namespace, self.dest, val)
+        items = getattr(namespace, self.dest, None) or []
+        items = copy.copy(items)
 
+        choices = ('CMD', 'ENTRYPOINT', 'ENV', 'EXPOSE', 'LABEL', 'ONBUILD',
+                   'STOPSIGNAL', 'USER', 'VOLUME', 'WORKDIR')
+
+        opt, _ = values.split('=', 1)
+        if opt not in choices:
+            parser.error('Option "{}" is not supported by argument "{}",'
+                         ' valid options are: {}'.format(
+                             opt, option_string, ', '.join(choices)))
+        items.append(values)
+        setattr(namespace, self.dest, items)
 
-class ChangeAction(argparse.Action):
-    """Convert and validate change argument."""
+
+class SignalAction(argparse.Action):
+    """Validate input as a signal."""
 
     def __init__(self,
                  option_strings,
                  dest,
                  nargs=None,
                  const=None,
-                 default=[],
-                 type=None,
+                 default=None,
+                 type=str,
                  choices=None,
                  required=False,
-                 help=None,
-                 metavar='OPT=VALUE'):
-        """Create ChangeAction object."""
-        help = (help or '') + ('Apply change(s) to the new image.'
-                               ' May be given multiple times.')
-
+                 help='The signal to send.'
+                 ' It may be given as a name or a number.',
+                 metavar='SIGNAL'):
+        """Create SignalAction object."""
         super().__init__(
             option_strings=option_strings,
             dest=dest,
@@ -94,21 +91,40 @@ class ChangeAction(argparse.Action):
             help=help,
             metavar=metavar)
 
-    def __call__(self, parser, namespace, values, option_string=None):
-        """Convert and Validate input."""
-        items = getattr(namespace, self.dest, None) or []
-        items = copy.copy(items)
+        if hasattr(signal, "Signals"):
 
-        choices = ('CMD', 'ENTRYPOINT', 'ENV', 'EXPOSE', 'LABEL', 'ONBUILD',
-                   'STOPSIGNAL', 'USER', 'VOLUME', 'WORKDIR')
+            def _signal_number(signame):
+                cooked = 'SIG{}'.format(signame)
+                try:
+                    return signal.Signals[cooked].value
+                except ValueError:
+                    pass
+        else:
 
-        opt, val = values.split('=', 1)
-        if opt not in choices:
-            parser.error('Option "{}" is not supported by argument "{}",'
-                         ' valid options are: {}'.format(
-                             opt, option_string, ', '.join(choices)))
-        items.append(values)
-        setattr(namespace, self.dest, items)
+            def _signal_number(signame):
+                cooked = 'SIG{}'.format(signame)
+                for n, v in sorted(signal.__dict__.items()):
+                    if n != cooked:
+                        continue
+                    if n.startswith("SIG") and not n.startswith("SIG_"):
+                        return v
+
+        self._signal_number = _signal_number
+
+    def __call__(self, parser, namespace, values, option_string=None):
+        """Validate input is a signal for platform."""
+        if values.isdigit():
+            signum = int(values)
+            if signal.SIGRTMIN <= signum >= signal.SIGRTMAX:
+                raise ValueError('"{}" is not a valid signal. {}-{}'.format(
+                    values, signal.SIGRTMIN, signal.SIGRTMAX))
+        else:
+            signum = self._signal_number(values)
+            if signum is None:
+                parser.error(
+                    '"{}" is not a valid signal,'
+                    ' see your platform documentation.'.format(values))
+        setattr(namespace, self.dest, signum)
 
 
 class UnitAction(argparse.Action):
diff --git a/contrib/python/pypodman/pypodman/lib/podman_parser.py b/contrib/python/pypodman/pypodman/lib/podman_parser.py
index 412c8c8fd..913546a91 100644
--- a/contrib/python/pypodman/pypodman/lib/podman_parser.py
+++ b/contrib/python/pypodman/pypodman/lib/podman_parser.py
@@ -48,6 +48,18 @@ class PodmanArgumentParser(argparse.ArgumentParser):
 
         super().__init__(**kwargs)
 
+    def add_flag(self, *args, **kwargs):
+        """Add flag to parser."""
+        flags = [a for a in args if a[0] in self.prefix_chars]
+        dest = flags[0].lstrip(self.prefix_chars)
+        no_flag = '{0}{0}no-{1}'.format(self.prefix_chars, dest)
+
+        group = self.add_mutually_exclusive_group(required=False)
+        group.add_argument(*flags, action='store_true', dest=dest, **kwargs)
+        group.add_argument(no_flag, action='store_false', dest=dest, **kwargs)
+        default = kwargs.get('default', False)
+        self.set_defaults(**{dest: default})
+
     def initialize_parser(self):
         """Initialize parser without causing recursion meltdown."""
         self.add_argument(