python loop through list

The loops in Python are basically the same as the loops in other languages, except that the writing format is different.1. for loop: for [loop condition]:[Loop statement] satisfies the loop condition, executes the loop statement,

Python list traversal and deletion implementation code, python list Code The list of python can be traversed using a for loop. An error is found during actual development, that is, an e

A loop in Python can use a for statement to implement1 list = ['Tom','Lucy','Mary ']2 for in list:3 print( NameYou will then output Tom Lucy Mary in turnIn addition, Python supports the Continue and break keywords, using the same usage as in C #.The more distinctive fea

Basic tutorial for getting started with Python (learningPython) -- 4.2Python's count loop body for statement. Another type of loop body structure in Python is the counting loop body for. some statement blocks are executed for a certain number of times through the for

because it saves space and prevents too large lists from being generated. Such as: >>> Range (5) range (0, 5) >>> If you want to get a list in interactive mode, you can join list to the front, as follows: Example: >>>list(range(5)) [0,1,2,3,4] >>>list(range(1,6)) [1,2,3,4,5] >

Python learning-list operations, python learning-list Python list Operation: List creation and update: 1 # list Update 2

A common loop structure is a for statement used to iterate multiple items. a loop is one of the most important functions of python. The most common iteration is to loop a sequence (string, list, or tuples) the common loop structur

If you are not clear about the for Loop in python, read this article: "for Loop Control statement-cainiao's Python note". Below are some of my learning records for your reference: Test_list = [2, 3, 6, 7, I test_str = (+ (I test_tuple = [(, 1), (, 2), (, 3 ),(, 4 (I, j) test_dict = {:,: key (key ++ L1 = [, L2 = [, (I

How to Use the for Loop in Python This article mainly introduces how to use the for Loop in Python. It is the basic knowledge in getting started with Python. for more information, see A for loop contains items that traverse all se

The main purpose of this talk is to have a basic concept of the loop object when you read the Python program. The Loop object does not exist with the birth of Python, but it has developed rapidly, especially in the era of Python 3x, which is becoming the standard form of lo

not test on Python3, but the result should not be much worse.) ） So why is the list element randomization causing such a noticeable slowdown? The original author of the blog wrote this as "Branch prediction (branch prediction)". If you are unfamiliar with this term, you can look at StackOverflow's question, which explains the concept well. (My concern is that the original author of the original has encountered this or similar problem and applied the

Like most other languages, Python also has a for loop. The only reason you haven't seen them yet is that Python is doing well in so many other ways that you don't usually need them. Most other languages do not have a powerful list data type like Python, so you need to do ma

A For loop list or tuple can represent an ordered set. What if we want to access each element of a list in turn? Like List:l .= ['Adam','Lisa','Bart']PrintL[0]PrintL[1]PrintL[2If the list contains only a few elements, it is OK to write, and if the list contains 10,000 elemen

multiple times, it is not possible to write the same statement more than once, one is more cumbersome, and the other is not conducive to maintenance, when the circular statement came into being. Where the loop statement is divided for the for loop and while loop.For LoopA For loop can traverse any sequence of items, such as a

CycleTo calculate 1+2+3, we can write an expression directly:>>> 1 + 2 + 36To calculate 1+2+3+...+10, you can barely write it.However, to calculate 1+2+3+...+10000, it is impossible to write the expression directly.In order for the computer to calculate thousands of repetitions, we need to loop the statements.There are two types of Python loops, one is the for...in loop