What is the function of the find () method in python

What is the function of the find () method in python? aiming at this problem, this article introduces the corresponding analysis and solution in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible method.

Description

Query whether the string contains substrings. If included, returns the index value at the beginning of the substring; otherwise, returns-1.

Grammar

Str.find (sub [, start [, end]])

Parameters.

Sub: the substring to be queried

Start: start indexing. Optional. Default is 0.

End: ends the index, optional, defaults to the length of the string

Return

The starting index value is returned if there is a substring, otherwise-1 is returned.

Example > > str = 'hello' > str.find (' o') 4 > str.find ('a')-1 the answer to the question about the role of the find () method in python is shared here. I hope the above content can be of some help to everyone. If you still have a lot of doubts unsolved, you can follow the industry information channel for more related knowledge.