How would I call a function by using a list?-CodePudding

I recently found some code that calls a function from a different directory like this:

modules["module_name"].function(parameters)

Then I had a thought about calling a function (but not a module; I already know how to do that) through lists in that format like so:

[function_name].(parameters)

(I use python 2.7 don't ask why)

CodePudding user response：

You can't call a function like that in a list. I don't know what that syntax you have there. t's not possible, but you can call method references from dicts or variables below

If you're function is stored in a dictionary like so

def add(x, y):
   return x   y

some_dict = {
   'add' : add
}

Then you can call it like so

some_dict['add'](10, 10)

CodePudding user response：

Calling a function using list... you can have a list of functions and call it out from index

def foo(arg):
  print(arg)

list_of_functions = [foo]
list_of_functions[0](3)

This also works with dictionaries, since functions are just pointers, as anything else.

But i believe you wanted to find the function by the name from variable, in that case, probably (idk, never went this route) use globals for that one

def foo(arg):
    print(arg)
    
function_name = 'foo'
globals()[function_name](3)

P.S. I still wonder about 2.7 though