How to call a function of a module by string

Question

I have a module like this

# mymodule.py
def myfun():
   print "hello"

being called like this

# main.py
import mymodule

def run(funcname):
    mymodule[funcname]()

in a directory structured like this

./
|
|--mymodule/
   |--__init__.py
   |--mymodule.py
|--main.py

When I call the run method of main.py like this

run("myfun")

I get this error:

TypeError: 'module' object has no attribute '__getitem__'

Understandably. I wouldve been surprised if this worked. The thing is, I need to be able to call a method of a module by string. Is this possible?

joebeeson · Accepted Answer · 2016-12-06 22:04:27Z

2

Try this.

def run(funcname):
    getattr(mymodule, funcname)()

answered Dec 6, 2016 at 22:04

joebeeson

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5 Comments

dopatraman Over a year ago

I get this error: AttributeError: 'module' object has no attribute 'myfun'

joebeeson Over a year ago

I assume then that "myfun" is not declared in the module. I've tested the above locally and found it to work.

dopatraman Over a year ago

so iv found that if i import the function like this import mymodule.mymodule.run then i can use this approach. but not otherwise

Skycc Over a year ago

@dopatraman, i don't think import mymodule.mymodule.run works if run is a function in mymodule, i think you need import mymodule.mymodule as mymodule

dopatraman Over a year ago

hm, i figured as much. what i need to do is dynamically import mymodule

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