Check if String contains substring in Python

Question

I am a newbie in Python, I am looking for the best way to check if the statement contains a specific string!

Ex: I want to check if this statement "Python is a programming language" contains a "Python" word or not!

Thanks for any inputs!

Answer 1

In fact, there is no a frank contains function in Python. meanwhile,

There are two ways to check if string contains specific substring in Python:-

1. Using “ in“ operator:

    str = "Python is a programming language"
    if "Python" in str
        # write your code here if it true
   
   

2. Using” find” method that will return an index if it found the substring:

    Else it return -1
    find method
    str.find("tion")
   

Comments

It's a great answer, thanks for your help!

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Glad to help!

Answer 2

Regular expression is widely used for pattern matching.

Python has a built-in package called re, which can be used to work with Regular Expressions .

The re module contains a function called search(), it can be used to check if a string contains the specified search pattern .

 re.search(pattern, string, flags[optional])

Ref: Contains in Paython