I have a docopt Usage string that has something like:
"""
Usage
...
-d --data=<data> Input data [default: ??]
...
"""
How to set the default value to emtpy string?
''
sets it to string "''"
and
[default: ]
raises a KeyError '--data'
This is not supported at this point. I created an issue: https://github.com/docopt/docopt/issues/118
Edit: I was pointed out that this is actually possible with [default: ]
. But this is a bit awkward. I still recommend not using [default: ...]
in this case and just describe the default using English, and handle the conversion from None
to empty string internally.