Dec 6, 2020 · If you want such a nested function to be available at the module level, you'd have to either return it from the function, or define a global variable to store it in: def f1(a): def f2(x): return a+x return 2*a, f2 then call that as result, f2 = f1(somevariable_or_literal).

Nov 7, 2013 · def function_writer(): print "I am a function writer" def new_function(): print "I am a new function" globals()['new_function'] = new_function function_writer() new_function() this type of functionality is typically avoided in python unless you have a VERY COMPELLING reason why this is absolutely what you need ...

Jan 1, 2018 · You can not, since a function is procedural, you define the function when you a specific func2() when you call func1(). If you call func1() multiple times, you will define several func2 s. Furthermore since it is procedural, it is possible that func2 is never declared (in an if …

Feb 16, 2021 · You'll also have to pass arguments around from one function to another, instead of having a closure like what we have with Structure 1. If you are making this make_multiplier as part of some library/API, using Structure 1 "hides" this f function and makes it a bit clearer and more readable to clients/users of the library/API that they only need ...

Feb 5, 2021 · A function defined inside another function is called a nested function. Nested functions can access variables of the enclosing scope. In Python, these non-local variables are read-only by default and we must declare them explicitly as non-local (using nonlocal keyword) in order to modify them.

Aug 27, 2016 · Python doesn't have a feature to access the function or its name within the function itself. A magic __function__ had been proposed for Python 3.0 but rejected. See PEP 3130 – Access to Current Module/Class/Function. The given rejection notice is: …

functions are first-class objects in python. you can pass them around, include them in dicts, lists, etc. Just don't include the parenthesis after the function name. Example, for a function named myfunction: myfunction means the function itself, myfunction() means to call the function and get its return value instead. –

2 way to use a function within an other: You define the square() function in another .py file (ex: myfile.py) and then, you can import the function this way: from myfile import square def newFunction(): square() You define the function in the same file and then there is no need for the import and you can use square() directly.

Mar 7, 2011 · for python 2, provided the disclaimer above is paid attention to, this should be the accepted answer. I found it even allows you to nest a signal handler which can manipulate the outer functions state - I wouldn't suggest that though - just a first step in refactoring some god-awful legacy code which had globals everywhere.

Jul 1, 2013 · The MAKE_CLOSURE opcode there creates a function with a closure, a nested function referring to x from the parent function (the LOAD_CLOSURE opcode builds the closure cell for the function). Without calling the make_adder function, you can only access the code object; it is stored as a constant with the make_adder() function code.