runtime-info about a function-object
Andreas.Leitgeb at siemens.at
Mon Aug 19 18:04:47 CEST 2002
>>> def f(x,y,z=someobj,*arg,**dict): pass
<function f at 0x8167bb4>
Is it possible to request info about function-object "f",
especially about the number/name/defaults of arguments
that f accepts ?
something like: (invented builtin)
(('x',),('y',),('z',<someClass instance at 0x...>),('*arg',),('**dict',))
min # of args=2; # of named args; takes *arg; takes **dict.
or whatever is internally available and parse-able at run-time.
The point is: even if a function lacks an informative __doc__-string,
the list of named parameters (the signature) usually gives me some extra
information about the function, even if all I see is the function-object
lying around in a "python -i ..."-session.
Also, it might be useful, if one likes to do some sanity-checking
beyond the simple callable()-test, but not actually test-calling
the object in a try-block beforehand.
It may also be nice to know, if a function is actually a generator.
Thus, for g being a generator,
__repr__(g) might return: "<generator g at 0x...>"
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