子命令和默认值的Python argparse顺序
我一直在努力解决这个问题,所以我想为另一个命令执行子命令,它将是与子命令和默认值的Python argparse顺序,python,argparse,subcommand,Python,Argparse,Subcommand,我一直在努力解决这个问题,所以我想为另一个命令执行子命令,它将是与subparsers=parser.add_subparsers()相反的ignore order,因为子parser可以在参数末尾执行,或者单独执行 例如,test.py通过SSH连接到设备并执行一些命令,我可以在终端中看到输出,但我希望将其保存为例如filename\u test\u 1(默认名称为command\u output)和.txt或.csv(默认格式为txt) 我希望我能以各种可能的方式执行--save(仅在--s
subparsers=parser.add_subparsers()
相反的ignore order,因为子parser可以在参数末尾执行,或者单独执行
例如,test.py通过SSH连接到设备并执行一些命令,我可以在终端中看到输出,但我希望将其保存为例如filename\u test\u 1(默认名称为command\u output
)和.txt或.csv(默认格式为txt
)
我希望我能以各种可能的方式执行--save
(仅在--save
-->之后执行-n
和-f
),例如错误:参数-f/--format:不能在--save
之前使用):
我是基于这段代码的,但我不能把它改写成我自己的需要。问题之一是--save
不是store\u true
参数:
#!/usr/bin/python3
import argparse
from collections import OrderedDict
def open_gui():
print("GUI has been opened.")
return 0
def test_information():
print("Some information.")
return 0
class ParentAction(argparse.Action):
def __init__(self, *args, **kwargs):
super().__init__(*args, default=OrderedDict(), **kwargs)
self.children = []
def __call__(self, parser, namespace, values, option_string=None):
items = getattr(namespace, self.dest)
nspace = type(namespace)()
for child in self.children:
if child.default is not None:
setattr(nspace, child.name, child.default)
items[values] = nspace
class ChildAction(argparse.Action):
def __init__(self, *args, parent, sub_action='store', **kwargs):
super().__init__(*args, **kwargs)
self.dest, self.name = parent.dest, self.dest
self.action = sub_action
self._action = None
self.parent = parent
parent.children.append(self)
def get_action(self, parser):
if self._action is None:
action_cls = parser._registry_get('action', self.action, self.action)
self._action = action_cls(self.option_strings, self.name)
return self._action
def __call__(self, parser, namespace, values, option_string=None):
items = getattr(namespace, self.dest)
try:
last_item = next(reversed(items.values()))
except StopIteration:
raise argparse.ArgumentError(self, "can't be used before {}".format(self.parent.option_strings[0]))
action = self.get_action(parser)
action(parser, last_item, values, option_string)
def main(command_line=None):
print('')
parser = argparse.ArgumentParser(prog='SSHtest',
description='It is example description',
add_help=False)
single_group = parser.add_argument_group('single use arguments')
single_group_exception = parser.add_argument_group('exception for single use arguments')
multi_group = parser.add_argument_group('multiple use arguments')
single_group.add_argument('--help', '-h', action='help', help='show this help message and exit')
single_group.add_argument('--version', '-v', action='version', version='%(prog)s 1.0.1a201009')
single_group.add_argument('--information', '-i', action='store_true', help='show alias information and exit')
single_group.add_argument('--gui', action='store_true', help='open a GUI application from default web browser and exit')
multi_group.add_argument('--debug', action='store_true', help='print debug info')
multi_group.add_argument('--command', type=str, help='execute custom command and exit')
parent = parser.add_argument('-s', '--save', action=ParentAction)
parser.add_argument('-n', '--name', action=ChildAction, parent=parent, default='command_output', metavar='NAME', help='set file name (default: %(default)s)')
parser.add_argument('-f', '--format', choices=['txt', 'csv', 'xlsx'], default='txt', action=ChildAction, parent=parent, metavar='FORMAT', help='set format of file, default is %(default)s (%(choices)s)')
args = parser.parse_args(command_line)
if args.information:
test_information()
parser.exit()
if args.debug:
print("debug: " + str(args))
if args.gui:
open_gui()
if __name__ == '__main__':
main()
也许有一个简单的方法?我还想保留--help的“良好”格式
注意:我想使用基本libs,因此我将继续使用argparse:v您是否只是在查找单击?啊,我没有添加注意,我想在项目中使用基本libs:/然后您有冲突的需求/-:argparse
尝试按照给定的顺序处理可选(标记的)参数。它没有强制执行命令的机制,并且除了相互排斥的组之外,几乎没有控制共同发生的能力<代码>参数组
严格用于帮助显示目的。@hpaulj最后,我找到了smth-这是在while
循环中解析已知参数
的旧解决方案。它工作得很好,但有一件事让我很恼火:不能在sub命令后“粘在一起”参数(但这很好)和sub命令的--help
,当它存在于args中时,我的意思是我想得到参数的“main”帮助
#!/usr/bin/python3
import argparse
from collections import OrderedDict
def open_gui():
print("GUI has been opened.")
return 0
def test_information():
print("Some information.")
return 0
class ParentAction(argparse.Action):
def __init__(self, *args, **kwargs):
super().__init__(*args, default=OrderedDict(), **kwargs)
self.children = []
def __call__(self, parser, namespace, values, option_string=None):
items = getattr(namespace, self.dest)
nspace = type(namespace)()
for child in self.children:
if child.default is not None:
setattr(nspace, child.name, child.default)
items[values] = nspace
class ChildAction(argparse.Action):
def __init__(self, *args, parent, sub_action='store', **kwargs):
super().__init__(*args, **kwargs)
self.dest, self.name = parent.dest, self.dest
self.action = sub_action
self._action = None
self.parent = parent
parent.children.append(self)
def get_action(self, parser):
if self._action is None:
action_cls = parser._registry_get('action', self.action, self.action)
self._action = action_cls(self.option_strings, self.name)
return self._action
def __call__(self, parser, namespace, values, option_string=None):
items = getattr(namespace, self.dest)
try:
last_item = next(reversed(items.values()))
except StopIteration:
raise argparse.ArgumentError(self, "can't be used before {}".format(self.parent.option_strings[0]))
action = self.get_action(parser)
action(parser, last_item, values, option_string)
def main(command_line=None):
print('')
parser = argparse.ArgumentParser(prog='SSHtest',
description='It is example description',
add_help=False)
single_group = parser.add_argument_group('single use arguments')
single_group_exception = parser.add_argument_group('exception for single use arguments')
multi_group = parser.add_argument_group('multiple use arguments')
single_group.add_argument('--help', '-h', action='help', help='show this help message and exit')
single_group.add_argument('--version', '-v', action='version', version='%(prog)s 1.0.1a201009')
single_group.add_argument('--information', '-i', action='store_true', help='show alias information and exit')
single_group.add_argument('--gui', action='store_true', help='open a GUI application from default web browser and exit')
multi_group.add_argument('--debug', action='store_true', help='print debug info')
multi_group.add_argument('--command', type=str, help='execute custom command and exit')
parent = parser.add_argument('-s', '--save', action=ParentAction)
parser.add_argument('-n', '--name', action=ChildAction, parent=parent, default='command_output', metavar='NAME', help='set file name (default: %(default)s)')
parser.add_argument('-f', '--format', choices=['txt', 'csv', 'xlsx'], default='txt', action=ChildAction, parent=parent, metavar='FORMAT', help='set format of file, default is %(default)s (%(choices)s)')
args = parser.parse_args(command_line)
if args.information:
test_information()
parser.exit()
if args.debug:
print("debug: " + str(args))
if args.gui:
open_gui()
if __name__ == '__main__':
main()