Dan Eloff wrote:
How can you determine that func2 will only accept
bar and zoo, but not foo and call the function with
bar as an argument?
Let Python answer the question for you:
>>> def func2(bar='a', zoo='b'):
... pass
...
>>> for name in dir(func2):
... print '%s: %s' % (name, getattr(func2, name))
...
__call__: <method-wrapper object at 0x008CAC30>
__class__: <type 'function'>
__delattr__: <method-wrapper object at 0x008CAC30>
__dict__: {}
__doc__: None
__get__: <method-wrapper object at 0x008CAC30>
__getattribute__: <method-wrapper object at 0x008CAC30>
__hash__: <method-wrapper object at 0x008CAC30>
__init__: <method-wrapper object at 0x008CAC30>
__module__: __main__
__name__: func2
__new__: <built-in method __new__ of type object at 0x1E0BAA50>
__reduce__: <built-in method __reduce__ of function object at 0x008CE5B0>
__reduce_ex__: <built-in method __reduce_ex__ of function object at 0x008CE5B0>
__repr__: <method-wrapper object at 0x008CAC30>
__setattr__: <method-wrapper object at 0x008CAC30>
__str__: <method-wrapper object at 0x008CAC30>
func_closure: None
func_code: <code object func2 at 008D5020, file "<stdin>", line 1>
func_defaults: ('a', 'b')
func_dict: {}
func_doc: None
func_globals: {'func2': <function func2 at 0x008CE5B0>, 'name': 'func_globals',
'__builtins__': <module '__builtin__' (built-in)>, '__name__': '__main__', 'foo
: <function foo at 0x008CE970>, '__doc__': None}
func_name: func2
>>> for name in dir(func2.func_code):
... print '%s: %s' % (name, getattr(func2.func_code, name))
...
__class__: <type 'code'>
__cmp__: <method-wrapper object at 0x008CACF0>
__delattr__: <method-wrapper object at 0x008CACF0>
__doc__: code(argcount, nlocals, stacksize, flags, codestring, constants, names,
varnames, filename, name, firstlineno, lnotab[, freevars[, cellvars]])
Create a code object. Not for the faint of heart.
__getattribute__: <method-wrapper object at 0x008CACF0>
__hash__: <method-wrapper object at 0x008CACF0>
__init__: <method-wrapper object at 0x008CACF0>
__new__: <built-in method __new__ of type object at 0x1E0B0C68>
__reduce__: <built-in method __reduce__ of code object at 0x008D5020>
__reduce_ex__: <built-in method __reduce_ex__ of code object at 0x008D5020>
__repr__: <method-wrapper object at 0x008CACF0>
__setattr__: <method-wrapper object at 0x008CACF0>
__str__: <method-wrapper object at 0x008CACF0>
co_argcount: 2
co_cellvars: ()
co_code: d S
co_consts: (None,)
co_filename: <stdin>
co_firstlineno: 1
co_flags: 67
co_freevars: ()
co_lnotab: â
co_name: func2
co_names: ()
co_nlocals: 2
co_stacksize: 1
co_varnames: ('bar', 'zoo')
>>>Hmm, func2.func_code.co_varnames seems to have the answer.
Cheers,
// m -- http://mail.python.org/mailman/listinfo/python-list
