Python Exercise: Execute a string containing Python code

Last update on April 22 2025 12:58:05 (UTC/GMT +8 hours)

18. Execute a String Containing Python Code

Write a Python program to execute a string containing Python code.

Sample Solution:

Python Code:

# Define a string variable 'mycode' containing a Python code as a string
mycode = 'print("hello world")'

# Define a multi-line string variable 'code' containing Python code as a string
code = """
def mutiply(x,y):
    return x*y

print('Multiply of 2 and 3 is: ',mutiply(2,3))
"""

# Execute the Python code represented by the string stored in the variable 'mycode'
exec(mycode)

# Execute the Python code represented by the multi-line string stored in the variable 'code'
exec(code)

Sample Output:

hello world                                                                                                   
Multiply of 2 and 3 is:  6

Explanation:

In the exercise above the code utilizes the "exec()" function to execute Python code represented as strings ('mycode' and 'code'). It executes the Python code inside these strings, printing "hello world" using 'exec(mycode)' and defining a function "mutiply()" and performing a multiplication operation using 'exec(code)'.

Flowchart:

For more Practice: Solve these Related Problems:

Write a Python program to accept a string of Python code from the user and execute it using exec(), capturing any output.
Write a Python program to define a multi-line string containing Python code and execute it, handling possible syntax errors.
Write a Python program to implement a function that takes a string of code, executes it, and returns the result of a specific variable defined in that code.
Write a Python program to securely execute a string of Python code by limiting the available global namespace.

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