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Is there a way to figure out the names of the positional arguments to a python function?
def foo(arg1, arg2):
pass
f=foo
# How do I find out want the 1st argument to f is called? I want 'arg1' as an answer
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An example of positional arguments can be seen in Python's complex() function. This function returns a complex number with a real term and an imaginary term. The order that numbers are passed to the complex() function determines which number is the real term and which number is the imaginary term.
A positional argument means its position matters in a function call. A keyword argument is a function argument with a name label. Passing arguments as keyword arguments means order does not matter.
its value. the argument's name specified along with its value.
The Python "TypeError: takes 1 positional argument but 2 were given" occurs for multiple reasons: Forgetting to specify the self argument in a class method. Forgetting to specify a second argument in a function's definition. Passing two arguments to a function that only takes one.
The function inspect.getargspec() does what you need in Python 2.
In Python 3, this has been deprecated, and you should instead use signature.
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