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 …

Aug 15, 2016 · index = string.center(len(string) + 2, ' ').find(word.center(len(word) + 2, ' ')) Here both the string and the word are right and left padded with blanks as to capture the full word in any position of the string.

Nov 19, 2024 · In this article, we will explore some simple and commonly used methods to find the index of a substring in Python. The find () method searches for the first occurrence of the specified substring and returns its starting index. If the substring is not found, it returns -1.

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 .

@stefanct this likely does double the complexity, I believe the in operator on a list has linear runtime. @ApproachingDarknessFish stated it would iterate twice which answers your question, and is right in saying that doubling the linear complexity is not a huge deal.

Jan 11, 2025 · This method uses regular expressions re.findall() to find the target word in each word of the string, then calls index() to find its position. It iterates over each word in the string and checks for the target word using re.findall().

Summary: in this tutorial, you’ll learn how to use the Python string index() method to get the index of a substring in a string. The string index() method returns the lowest index of a substring in a string. The following shows the syntax of the index() …

Nov 22, 2024 · The index() method is a built-in string method that allows you to find the index of the first occurrence of a substring within a string. In this tutorial, we'll explore the syntax, usage, and considerations of the index() method in Python.

How to get the index of a word in a list in Python - Get index of word using list comprehension, type() function, & index() method

Another common exercise where index is often needed in a loop is to find the index of the first item in a list that satisfies some condition (e.g. greater/smaller than some target value). In the following example, we want to find the index of the first value that exceeds 2.5.