python for enumerate

there are other uses, we first create a text document Abd123.txt, with the help of the 12 zodiac, each line to write an animal, such as "I am a mouse",It is now required to output the number of rows.First, use the Len () function directly.F=open ('c:\\users\ronghere\desktop\\abc123.txt','r') G=f.readlines ()print(len (g))The output is 12, correct. But if the value is very large, then the efficiency is not significant ~Second, use the enumerate () fun

Python enumerate function code parsing, pythonenumerate The enumerate function is used to traverse the elements in the sequence and Their subscript. Enumerate function description: Function prototype: enumerate (sequence, [start = 0]) Function: lists the sequence data and da

In python, The enumerate function traverses the element usage analysis, and pythonenumerate This document describes how to use the enumerate function to traverse elements in python. We will share this with you for your reference. The details are as follows: The enumerate fun

Python traversal sequence enumerate function analysis, pythonenumerate The enumerate function is used to traverse the elements in the sequence and Their subscript. Enumerate function description: Function prototype: enumerate (sequence, [start = 0]) Function: lists the seque

, ' a1b2c3d4 ')For match in Matchiter:Print Match.group ()#运行结果------># 1# 2# 3# 4‘‘‘ ' # "7" Re.sub (Pattern,repl,string[,count]) #使用repl替换string中每一个匹配的子串后返回替换后的字符串. #当repl是一个字符串时, you can use \id or \g #当repl是一个方法时, this method should only accept one parameter (the match object) and return a string to replace (the returned string cannot be referenced in a group) #count用于指定最多替换的次数, replace all P = When not specified Re.compile (R ' (? p s = ' I say, hello world! ' Print p.sub (R ' \g P =

Python enumerate index iteration code parsing, pythonenumerate This article focuses on Python enumerate index iteration. Index Iteration In Python, iterations always extract the element itself, not the element index. For ordered sets, the elements are indeed indexed. Sometim

Example parsing of enumerate usage in python, pythonenumerate In python, the usage of enumerate is mostly used to get the count in the for loop. This article shows you how to use enumerate in python in the form of an instance. The

Enumerate () descriptionEnumerate () is a Python built-in function enumerate the dictionary is enumerated, enumerated meaning for an iterative (iterable)/Ergodic object (such as lists, strings), enumerate it into an index sequence, It allows both index and value enumerate to

Enumerate () description Enumerate () is a Python built-in function enumerate the dictionary is enumerated, enumerated meaning for an iterative (iterable)/Ergodic object (such as lists, strings), enumerate it into an index sequence, It allows both index and value

First out a topic: 1. There is a list= [1, 2, 3, 4, 5, 6]Please print the output:0, 11, 22, 33, 44, 55, 6Print output,2. Reverse list to [6, 5, 4, 3, 2, 1]3. Select the even number in a and the result is [4, 8, 12]This example uses the use of enumerate in Python. By the way, enumerate the usage of the count in the For loop, the

Enumeration of PythonBuilt-in function enumearate () Enumerate () is a python built-in function Enumerate are enumerated and enumerated in the dictionary. For an iterative (iterable)/Ergodic object (such as a list, string), enumerate makes it an index sequence that can be used to obtain both the index

The usage of enumerate in Python is used to get counted in the For loop, and this article shows you the use of enumerate in Python as an instance. Specific as follows: The enumerate parameter is a variable that can be traversed, such as a string, a list, and so on; The retu

This article mainly introduces the usage of the enumerate function in python, and analyzes in detail the functions, definitions, and usage skills of the enumerate function in the form of instances, for more information about how to use the enumerate function in python, see t

Example Analysis of enumerate function usage in python This example describes how to use the enumerate function in python. Share it with you for your reference. The specific analysis is as follows: A new function enumerate was found today. In general, if you want to traverse

The use of enumerate in Python is used for counting in the For loop, and this article shows you how to use the enumerate in Python in an instance form. Specifically as follows: The enumerate parameter is a variable that can be traversed, such as a string, a list, and so on;

Enumerate () is a python built-in function for python2.x and python3.xEnumerate are enumerated and enumerated in the dictionary.The enumerate parameter is an object that can be traversed/iterated (such as a list, a string)The enumerate is used to get a count in the for loop, which can be used to get both the index and

Enumerate, enumeration functionsReturn an enumerate object,enumerate was useful for obtaining an index listExample 1: Generate a list and display its indexImport strings = List (string.uppercase) s = s[0:5]for i in range (len (s)): print I,s[i]Example 2: generate a list and display its indexImport strings = List (string.uppercase) s = s[0:8]for index,i in

This article describes how to use the enumerate function in Python. the enumerate function is used to traverse elements in a sequence and their subscript. it is mostly used to get counts in a for loop. the enumerate parameter is a variable that can be traversed, such as string and list In general, if you want to trave

Enumerate () function usage in PythonFirst out a topic: 1. There is a list= [1, 2, 3, 4, 5, 6]Please print the output:0, 11, 22, 33, 44, 55, 6Print output,2. Reverse list to [6, 5, 4, 3, 2, 1]3. Select the even number in a and the result is [4, 8, 12]This example uses the use of enumerate in Python. By the way, enumerate