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example_004_04_decorators_in_python.py
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example_004_04_decorators_in_python.py
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"""Now we want to run the timer n times."""
from time import time
# def timer(func):
# def f(*args, **kwargs):
# before = time()
# rv = func(*args, **kwargs)
# after = time()
# print("Elapsed Time is: ", after - before)
# return rv
# return f
# this video describes this code very well https://www.youtube.com/watch?v=r7Dtus7N4pI
def ntimes(num):
"""A decorator to time a function n times."""
def inner(func):
def wrapper(*args, **kwargs):
for _ in range(num):
before = time()
ret_val = func(*args, **kwargs)
after = time()
print("Elapsed Time is: ", after - before)
return ret_val
return wrapper
return inner
@ntimes(2)
def add(num1, num2=1):
"""A simple function to add two numbers. """
return num1 + num2
@ntimes(3)
def mult(num1, num2=1):
"""A simple function to multiply. """
return num1 * num2
print("add(1,2) = ", add(1, 2))
print("mult(2,3) = ", mult(2, 3))
# More about the Wrappers
# https://stackoverflow.com/questions/63512189/can-i-run-a-decorated-function-without-a-decorator-functionality