How can we define a Python function at runtime?

Python Server Side Programming Programming

I have a script with a function as follows

#dyn.py
def dynf()
     print “Really Works”

I want to define the same python function and execute it at runtime by using the python prompt. How do I do that?

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1 Answer

Rajendra Dharmkar

Answered on 7th Dec, 2017

We can define a python function and execute it at runtime by importing the types module and using its function types.FunctionType() as follows

This code works at the python prompt as shown. First we import the types module. Then we run the command dynf=…; then we call the function dynf() to get the output as shown

>>> import types
>>> dynf = types.FunctionType(compile('print "Really Works"', 'dyn.py', 'exec'), {})
>>> dynf()
Really Works

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How can we define a Python function at runtime?

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