Playing around with the new type annotations in Python 3.5 and 3.6, I noticed they can be used to define command line interfaces from a regular python function. It’s kind of like what click does, but better.
Usage
SimpleCli Example:
# test.py
from typing import List, Optional
from pathlib import Path
from clype import SimpleCli
@SimpleCli
def mycli(v: Optional[bool], paths: List[Path]):
print('v:', v)
print('paths ({}):'.format(type(paths[0])), *paths)
if __name__ == '__main__':
mycli.run()Result:
$ python test.py -v dir/file.ext v: True paths (<class 'pathlib.PosixPath'>): dir/file.ext
SubcommandCli Example:
# test.py
from typing import List, Optional
from pathlib import Path
from clype import SubcommandCli
mycli = SubcommandCli('mycli')
@mycli.command
def bar(r: Optional[bool], path: Path):
"""
The first command
"""
pass
@mycli.command
def foo(v: Optional[bool], paths: List[Path]):
"""
The second command
"""
pass
if __name__ == '__main__':
mycli.run()Result:
$ python test.py -h usage: mycli [-h] command ... optional arguments: -h, --help show this help message and exit commands: bar The first command foo The second command $ python test.py bar -h usage: mycli bar [-h] [-r] path positional arguments: path optional arguments: -h, --help show this help message and exit -r
