How to understand the ‘str’ in Python?

In Python, the ‘str’ refers to the data type known as string. Strings are ordered sequences composed of zero or more characters, which can include letters, numbers, symbols, etc. In Python, strings can be represented using either single quotes (”) or double quotes (“”).

Strings are immutable, meaning once they are created, their values cannot be changed. However, strings can be manipulated using methods such as concatenation, slicing, and replacement.

Strings can be accessed using indexes, which are integers starting from 0 that indicate the position within the string. Specific characters within a string can be obtained using square brackets ([]). For example, in the string “Hello”, we can use str[0] to access the first character “H”.

Additionally, Python also offers a wide range of string processing methods and functions for operations such as finding substrings, replacing substrings, converting case, and splitting strings.

In conclusion, strings are one of the commonly used data types in Python, which can be used to store and manipulate text data.