I am deciphering someone else’s code and I see the following:
def get_set_string(set_): if PY3: return str(set_) else: return str(set_)
Does the underscore AFTER the variable mean anything or is this just a part of the variable’s name and means nothing?
It means nothing. I believe the one who wrote this wanted a variable name designating a set, but
set is a type in Python (which creates a set), so he added the underscore.
No semantics are associated with a trailing underscore. According to
PEP 8, the style guide for Python, users are urged to use trailing underscores in order to not conflict with Python keywords and/or Python built-ins:
single_trailing_underscore_: used by convention to avoid conflicts with Python keyword, e.g.
set_ means that the built-in name for sets, i.e
set, won’t get shadowed and lose its known reference during the function call.