How to handle the pylint message: ID:W0612 Unused Variable
coding-style, pylint, python
Solution
I believe that `a, dummy = func()` does the trick. Pylint allows (if I recall correctly) unused variables names that start with `_` or `dummy`, e.g. `dummy_index`.
You can configure this by passing `--dummy-variables-rgx` option to Pylint. This specifies the regex that catches dummy variable names.
From Pylint 1.6.0 documentation:
dummy-variables-rgx:
A regular expression matching the name of dummy variables (i.e. expectedly not used). Default: (_+[a-zA-Z0-9]*?$)|dummy
Note: Using `_` can indeed cause confusion (props: Sven Marnach). There's a convention to use single underscore as prefix for semi-private identifiers, the double underscore is of course the prefix for special Python methods and on top of that there's a convention to alias`gettext()` function as `_()` in programs that need localization as in `_("text to translate")`.
Problem
I'm updating some code to PEP 8 standard using pylint. Part of the code is throwing the W0612 unused variable error but it's because it's using a module that returns (x,y) for example when only x is needed in this particular case, this is what's done. ``` (var_1, var_2) = func() def func(): a="a" b="b" return (a,b) ``` var_1 is then returned but var_2 is never used and therefore throws the error. How should I handle this? I'm thinking this ``` var = func()[0] ``` What is the best way to handle it?