.find() and .index() string methods in Python

 The difference between these two methods is that .index()  method raises error while the other does not.

str1 = "My name is Abdur."
print(str1.find("is")) # gives index of first character occurence
print(str1.find("iss")) #does not raises error, returns -1
print(str1.index("is")) # gives index of first character occurence
print(str1.index("iss")) # raises error
Python

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