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#2677: add note that not all functions may accept keyword args.

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Georg Brandl 2008-04-27 09:39:59 +00:00
parent 9f4f48114f
commit f8770fb5e2
1 changed files with 8 additions and 0 deletions
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Doc/reference/expressions.rst
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@ -663,6 +663,14 @@ slots for which no default value is specified, a :exc:`TypeError` exception is
raised. Otherwise, the list of filled slots is used as the argument list for
the call.
.. note::
An implementation may provide builtin functions whose positional parameters do
not have names, even if they are 'named' for the purpose of documentation, and
which therefore cannot be supplied by keyword. In CPython, this is the case for
functions implemented in C that use :cfunc:`PyArg_ParseTuple` to parse their
arguments.
If there are more positional arguments than there are formal parameter slots, a
:exc:`TypeError` exception is raised, unless a formal parameter using the syntax
``*identifier`` is present; in this case, that formal parameter receives a tuple