Comparison of string lookup efficiency in Python

Source: Internet
Author: User

There are several ways to find a string in Python, usually with Re.match/search or Str.find

Use an example to illustrate the efficiency of the various methods as follows:

From Timeit import Timeitimport redef Find (String, text):    if String.find (text) >-1:        passdef re_find (string, t EXT):    if Re.match (text, string):        passdef Best_find (String, text):    if text in string:       passprint Timeit ( "Find (String, text)", "from __main__ import find; string= ' Lookforme '; text= ' look ')  print Timeit ("Re_find (string, Text)", "from __main__ import re_find; string= ' Lookforme '; text= ' look ')  print Timeit ("Best_find (string, Text)", "from __main__ import best_find; string= ' Lookforme '; text= ' look ')

The result of the execution is:

0.4413938522342.123024940490.251421928406

The most efficient way to see it is: if text in string:


Reference Link: http://stackoverflow.com/questions/4901523/whats-a-faster-operation-re-match-search-or-str-find


Comparison of string lookup efficiency in Python

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.