Why Does My Python Code Throw an 'IndentationError: unindent does not match any outer indentation level'?

IndentationError: Unmatched Indentation Levels

In Python, proper indentation is crucial. When encountering the error "IndentationError: unindent does not match any outer indentation level," it indicates a mismatch in indentation, even though the code appears to be correctly indented.

Analyzing the provided code, we observe that it utilizes both spaces and tabs for indentation. This inconsistency can lead to the indentation mismatch.

Solution:

To resolve this error, we need to ensure consistent indentation throughout the code. It is advisable to use either tabs or spaces, but not a combination of both.

Here's the corrected code using spaces for indentation:

import sys

def Factorial(n):  # Return factorial
    result = 1
    for i in range(1, n):
        result = result * i
    print("factorial is ", result)
    return result

print(Factorial(10))

In this revised code, all indentation levels use spaces, eliminating the mismatch that caused the original error. The code should now execute successfully.

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