[Python-Dev] PEP 3102: Keyword-only arguments (original) (raw)
Terry Reedy tjreedy at udel.edu
Sun Apr 30 05:30:38 CEST 2006
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"Talin" <talin at acm.org> wrote in message news:4453B025.3080100 at acm.org...
def sortwords(*wordlist, casesensitive=False):
The rationale for this is pretty obvious. But ...
The second syntactical change is to allow the argument name to be omitted for a varargs argument:
def compare(a, b, *, key=None): ... The reasoning behind this change is as follows. Imagine for a moment a function which takes several positional arguments, as well as a keyword argument: def compare(a, b, key=None): ... Now, suppose you wanted to have 'key' be a keyword-only argument.
Why? Why not let the user type the additional argument(s) without the parameter name?
tjr
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