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Title: Finding a Substring in a String with Python: A Comprehensive Tutorial
Introduction:
In Python, searching for a substring within a string is a common task that can be accomplished using various methods and functions. In this tutorial, we'll explore different ways to find a substring in a string, along with code examples for each method.
Method 1: Using the in Operator
The simplest way to check if a substring exists in a string is by using the in operator. This method returns a boolean value indicating whether the substring is present in the given string or not.
Method 2: Using the find() Method
The find() method is another built-in function in Python that can be used to locate the starting index of a substring in a string. If the substring is not found, it returns -1.
Method 3: Using Regular Expressions (regex)
Regular expressions provide a powerful way to search for patterns within strings. The re module in Python allows us to use regex for substring searches.
Conclusion:
In this tutorial, we explored three different methods to find a substring in a string using Python. Each method has its own use cases, and the choice depends on the specific requirements of your task. Whether you prefer simplicity with the in operator, the specific index using find(), or the flexibility of regular expressions, Python provides versatile options for substring searches.
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