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11 April, 2022

Python exec() Function

 Programing Coderfunda     April 11, 2022     Python     No comments   

Python exec() Function

The python exec() function is used for the dynamic execution of Python program which can either be a string or object code and it accepts large blocks of code, unlike the eval() function which only accepts a single expression.

Signature

exec(object, globals, locals)

Parameters

object - It should be either string or code object.

globals (optional) - It is used to specify global functions.

locals (optional) - It is used to specify local functions.

Let's see some examples of exec() function which are given below:

Python exec() Function Example 1

This example shows working of exec() function.

  1. x = 5  
  2. exec('print(x==5)')  
  3. exec('print(x+4)')  

Output:

True
9

Python exec() Function Example 2

This example shows exec() dynamic code execution

  1. from math import *  
  2. for l in range(1, 3):  
  3.     func = input("Enter Code Snippet to execute:\n")  
  4.     try:  
  5.         exec(func)  
  6.       except Exception as ex:  
  7.         print(ex)  
  8.         break  
  9. print('Done')  

Output:

Enter Code Snippet to execute:
print(sqrt(16))
4.0
Enter Code Snippet to execute:
print(min(2,1))
1
Done
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