How to Check if a Word Exists in a String in Python?

Determining Word Presence in a String in Python

Identifying whether a particular word exists within a string is a common requirement in Python programming. One approach for achieving this is using the .find() method, which returns the first occurrence of a substring within a given string, or -1 if the substring is not found. While this method is effective, it requires additional logic to determine the word's presence.

However, there exists a simpler solution using Python's membership operator (in). This operator allows for an intuitive way to check if a word is present in a string. By using this operator, you can write the following code snippet:

if word in mystring:
   print('success')

If the word is present within the string mystring, the in operator will evaluate to True, causing the print statement to execute and display "success." Conversely, if the word is not found, the in operator will evaluate to False, and the print statement will not be executed.

This approach is both concise and efficient, making it an ideal solution for determining word presence in a string in Python.

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