How Do I Extract Substrings in Python Using Slicing?

Getting Substrings in Python

How do you extract a portion of a string in Python? The answer lies in the language's powerful string slicing feature.

String slicing allows you to obtain a substring by specifying the starting and ending indices using square brackets. By default, the first character of the string has an index of 0.

Syntax:

string[start:end]

Options:

• Omitting the start index: Starts from the beginning of the string.
• Omitting the end index: Extracts to the end of the string.

Examples:

>>> x = "Hello World!"
>>> x[2:]  # From character 3 to the end
'llo World!'
>>> x[:2]  # From the start to character 2
'He'
>>> x[:-2]  # From the start to 2 characters before the end
'Hello Worl'
>>> x[-2:]  # From 2 characters before the end to the end
'd!'
>>> x[2:-2]  # From character 3 to 2 characters before the end
'llo Worl'

This concept is known as "slicing" in Python and extends beyond strings. Refer to the documentation for a comprehensive explanation.

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