How to convert two strings to give you a function name in Python

Question

If you had two strings, like so ->

string1 = "get"  
string2 = "Feed"

So how would you use these 2 strings to call a function named -> getFeed() ?

Jordan · Accepted Answer · 2011-07-20 06:03:23Z

7

Depending on where the function is, you can use one of these:

globals()[string1 + string2]()
locals()[string1 + string2]()

answered Jul 20, 2011 at 6:03

Jordan

32.7k6 gold badges59 silver badges67 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

agf Over a year ago

Or, only as a last resort, eval(string1 + string2)() if it can be in arbitrary scope.

Jordan Over a year ago

Oh no it's eval! Yes, that would also work. I imagine a responsible answerer would've said something about the importance of sanitizing input if these variables come from some other system, but it's 2am and I'm hungry.

K Mehta · Accepted Answer · 2011-07-20 06:04:25Z

3

If ImportedLib had your function getFeed(), you'd call it as such:

import ImportedLib
getattr(ImportedLib, string1+string2)()

answered Jul 20, 2011 at 6:04

K Mehta

10.6k4 gold badges50 silver badges80 bronze badges

Comments

BenMorel · Accepted Answer · 2013-11-12 00:11:00Z

2

Assume the function is located inside foo. Then call

getattr(foo, string1 + string2) ()

edited Nov 12, 2013 at 0:11

BenMorel

37k52 gold badges208 silver badges339 bronze badges

answered Jul 20, 2011 at 6:03

Hyperboreus

32.5k9 gold badges50 silver badges88 bronze badges

Collectives™ on Stack Overflow

How to convert two strings to give you a function name in Python

3 Answers 3

2 Comments

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

3 Answers 3

2 Comments

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related