Write a Python program to find the string similarity between two given strings.

import difflib
def string_similarity(str1, str2):
    result =  difflib.SequenceMatcher(a=str1.lower(), b=str2.lower())
    return result.ratio()
str1 = 'Python Exercises'
str2 = 'Python Exercises'
print("Original string:")
print(str1)
print(str2)
print("Similarity between two said strings:")
print(string_similarity(str1,str2))
str1 = 'Python Exercises'
str2 = 'Python Exercise'
print("\nOriginal string:")
print(str1)
print(str2)
print("Similarity between two said strings:")
print(string_similarity(str1,str2))
str1 = 'Python Exercises'
str2 = 'Python Ex.'
print("\nOriginal string:")
print(str1)
print(str2)
print("Similarity between two said strings:")
print(string_similarity(str1,str2))
str1 = 'Python Exercises'
str2 = 'Python'
print("\nOriginal string:")
print(str1)
print(str2)
print("Similarity between two said strings:")
print(string_similarity(str1,str2))
str1 = 'Python Exercises'
str1 = 'Java Exercises'
print("\nOriginal string:")
print(str1)
print(str2)
print("Similarity between two said strings:")
print(string_similarity(str1,str2))