How to Determine if a Word Exists in a String Using Python?

Determining Word Presence in a String in Python

In Python, finding out if a specific word is within a string can be accomplished in multiple ways. One method involves utilizing the .find() function to search for the word's occurrence within the string. However, an alternative approach employing an if statement can also be utilized.

The code snippet presented in the question attempts to check for word presence using an if statement and .find(), but it contains an error. To correctly implement this approach, the correct syntax should be as follows:

if string.find(word) != -1:
    print("success")

In this corrected code, if the .find() function successfully finds the word within the string, it returns a non-negative integer representing the index of the first character in the word. If the word is not found, it returns -1. By comparing the result of the .find() function with -1, the code can accurately determine if the word is present in the string, as it will be True if the word is found (i.e., .find() returns a non-negative integer) and False if it is not found.

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