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Apr 27, 2022 · The Python string data type is a sequence made up of one or more individual characters that could consist of letters, numbers, whitespace characters, or symbols. As the string is a sequence, it can be accessed in the same ways that other sequence-based data types are, through indexing and slicing.
The index() method finds the first occurrence of the specified value. The index() method raises an exception if the value is not found. The index() method is almost the same as the find() method, the only difference is that the find() method returns -1 if the value is not found. (See example below)
Nov 7, 2024 · The index() method in Python is used to find the position of a specified substring within a given string. It is similar to the find() method but raises a ValueError if the substring is not found, while find() returns -1 .
Dec 15, 2021 · Introduction. The Python string data type is a sequence made up of one or more individual characters that could consist of letters, numbers, whitespace characters, or symbols. Because a string is a sequence, it can be accessed in the same ways that other sequence-based data types are, through indexing and slicing.
Feb 19, 2010 · There are two string methods for this, find() and index(). The difference between the two is what happens when the search string isn't found. find() returns -1 and index() raises a ValueError. Using find() >>> myString = 'Position of a character' >>> myString.find('s') 2. >>> myString.find('x') -1. Using index()
Mar 29, 2023 · In this article, we have discussed the concepts of slicing and indexing in Python and provided several examples of how they can be used to manipulate lists and strings. Slicing and indexing are powerful tools that can greatly simplify certain tasks in Python programming, such as selecting subsets of data, modifying lists, and extracting substrings.
The index() method takes three parameters: sub - substring to be searched in the string str. start and end (optional) - substring is searched within str [start:end] index () Return Value. If substring exists inside the string, it returns the lowest index in the string where substring is found.
