Write a Python program to get the execution time of a Python method.

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import time
def sum_of_n_numbers(n):
    start_time = time.time()
    s = 0
    for i in range(1,n+1):
        s = s + i
    end_time = time.time()
    return s,end_time-start_time

n = 5
print("\nTime to sum of 1 to ",n," and required time to calculate is :",sum_of_n_numbers(n))