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CLI behaviour has changed slightly: flags cannot be passed after `action`. Updated tests accordingly.
Use custom argparse Action (FileInputAction) to open given file (or stdin if file is "-" or not given). Update usage and help messages and README examples. Issue 0k#11
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As requested in #11 and #13, added a new CLI option (
--file) to read from a file instead of just standard input.Personally, I would prefer it as a positional argument but i think it will conflict with the current interface.
In order to do it in a more "elegant" way, I have refactored the argument parsing to use python standard library's
argparsemodule.Then, added the new option which defaults to read from stdin and accepts a filename as value (and "-" as another way to read from stdin). Error handling for non-existing input file should probably be added.
Migrating to
argparsecauses an error for previously valid argument ordering. E.g., the following call is no longer valid:the valid call would be (notice the
y-flag position):