Question

Using Python 3 Write a decorator named debug that prints "Entering " followed by the name of the decorated function (func.__name__) before calling it and prints "Exiting " followed by the name of the decorated function after calling it.

Answer 1

Python code is given below:

def debug(func):
    fname = func.__name__   # getting the file name
    def inner(*args, **kwargs):
        print("Entering " + fname)   # printing result before calling of actual function
        func(*args, **kwargs)        # calling of actual function
        print("Exiting " + fname)   # printing result after calling of actual function
    return inner

# main function 
@debug
def main():
        print("Main")

if __name__ == '__main__':
    main()

Sample Output:
Entering main
Main
Exiting main

Screenshot of the code is given below:

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