# Write a Python program to Test if Substring occurs in specific position # Python3 code to demonstrate working of # Test if Substring occurs in specific position# Using loop  # initializing string test_str = "Gfg is best"  # printing original string print("The original string is : " + test_str)  # initializing range i, j = 7, 11  # initializing substrsubstr = "best"  # Test if Substring occurs in specific position# Using loopres = Truek = 0for idx in range(len(test_str)):    if idx >= i  and idx < j:        if test_str[idx] != substr[k]:            res = False            break        k = k + 1          # printing result print("Does string contain substring at required position ? : " + str(res)) 