python loop through list

Python [2]-list and metadata, python listI. Sequence Python contains six built-in sequences: List, tuples, strings, unicode strings, buffer objects, and xrange objects. The list can be modified, and the tuples cannot be modified.I

, using indentation to divide the statement block, the same indentation number of statements together to form a block of statements. 3. There are no switch–case statements in Python. 2. If nestingIn a nested if statement, the IF...ELIF...ELSE structure can be placed in another if...elif...else structure.if expression 1: statement if expression 2: statement elif expression 3: statement else statement elif e

Vamei Source: Http://www.cnblogs.com/vamei Welcome reprint, Please also keep this statement. Thank you!The main purpose of this talk is to have a basic concept of looping objects when you are reading a python program.The Loop object is not with the birth of Python, but it is developing rapidly, especially in the Python

Author: vamei Source: http://www.cnblogs.com/vamei welcome reprint, please also keep this statement. Thank you! As mentioned above, we are once again familiar with loop control in Python. Now we will contactIterable object). The main purpose of this lecture is to read PythonProgramWhen there is a basic concept for the loop object. The circular object

of enumerate (), a value table (tuple) containing two elements is returned. Zip () If you want to extract one element from multiple equi-length sequences in each cycle, you can use zip () to conveniently implement the following:Copy codeThe Code is as follows:Ta = [1, 2, 3]Tb = [9, 8, 7]Tc = ['A', 'B', 'C']For (a, B, c) in zip (ta, tb, tc ):Print (a, B, c)In each loop, an element is extracted from left to right from each sequence and merged into a tu

Student Results # Note The return value type of input score = input ("Please enter student score:") # need to convert str to Intscore = Int (score)? If score>=90: print ( "A") elif score>=: print ("B") elif score >=: print ("C") elif score >=60: print ("D") Else: print ("You go, my mom won't let me play with Fools")　　Please input student score: 8 You go, my mom won't let me play with fools.If statement other: If statements can be nested, but not recommended

How to implement an infinite element list in Python, and an infinite element list in python The example in this article describes how to implement the infinite element list in Python. The specific implementation can be completed u

Python List Operation instance, python list instance This article describes how to operate python lists. Share it with you for your reference. The specific implementation method is as follows: Copy codeThe Code is as follows: class Node:"Single node in a data structure """De

If statement applied--Maximum value 1 """2 find the maximum value in three digits and print it out3 """4a = Int (input ("A:"))5b = Int (input ("B:"))6c = Int (input ("C:"))7 8 ifA>B:9Max_num =aTen ifMax_num >C: One Print(max_num) A Else: - Print(c) - Else: theMax_num =b - ifMax_num >C: - Print(max_num) - Else: + Print(c) - + Print(Max (A,B,C))#built-in functions A Print(min (a,b,c))#built-in functionsWhile

Vamei Source: Http://www.cnblogs.com/vamei Welcome reprint, Please also keep this statement. Thank you!The main purpose of this talk is to have a basic concept of looping objects when you are reading a python program.The Loop object is not with the birth of Python, but it is developing rapidly, especially in the Python

Http://www.cnblogs.com/way_testlife/archive/2010/06/14/1758276.html # First: Calculate the prime number between 50 and 100. Import mathFor I in range (50,100 + 1 ):For J in range (2, INT (math. SQRT (I) + 1 ):If I % J = 0:BreakElse:Print I # Second: place the else in the same indentation as if. Import mathFor I in range (50,100 + 1 ):For J in range (2, INT (math. SQRT (I) + 1 ):If I % J = 0:BreakElse:Print I # Third: Add a break statement after Else. Import mathFor I in range (50,100 + 1 ):For

How does python manage memory in loop references? python references In python, junk objects are recycled by reference counting. In some ring data structures (tree, graph ......), There is a circular reference between objects. For example, if the parent node of the tree references the child node, the child node referenc

Learn Python for loop statements and pythonfor Let's talk about it. Basic for operations For is used to read elements from an object sequentially. Let's take a look at the following example and use the for loop to find out which data objects can be used and which cannot be used. It also provides a review of past content. Copy codeThe Code is as follows:>>> Name_s

[Python] -- list, python -- list The most basic data structure in Python. Each element in the sequence is assigned a number-its location, or index. The first index is 0, the second index is 1, and so on.List 1. Define the list and

CharIn fact, enumerate () returns a fixed value table (tuple) with two elements in each loop, with two elements assigned to index and CharZip ()If you have multiple equal-length sequences, and then want to remove an element from each sequence each time you loop, you can use ZIP () to easily implement:Ta = [1,2,3]TB = [9,8,7]TC = [' A ', ' B ', ' C ']for (a,b,c) in Zip (TA,TB,TC): print (A,B,C)Each time

Python learning 3: List, tuples, and python learning list1. List: 1. How to define a list: list1 = [1,2,3,4,"hello","world"] As shown above, list1 is a list. The content of the list is

Python list deduplication, Python list Boring statistics on how many methods are available to deduplicate the list. 1. Set list(set(alist)) To maintain the order: import randomif __name__=='__main__': a=[random.randint(0,10) fo

Other Statement 1 in the notes of the basic python Tutorial: python loop statement Print-related Print can print multiple expressions, as long as they are separated by commas (,), a space is inserted between each parameter in the result. Use + to avoid spaces, as shown in figure >>> Print 'Age: ', 42Age: 42>>> Print 'hello' + ',' + 'World'Hello, world Add a co

This article mainly introduces the loop-related functions range, enumerate, and zip in the python advanced tutorial. These functions are often used with loop programs to complete loops, for more information, see the "loop" section. We have discussed the basic loop Syntax of

A Python for loop can traverse any sequence of items, such as a list or a string.The syntax structure for the For loop is as follows:　　For Iterating_var in sequence: 　　Statements(s) The simplest form is as follows, looping 10 times.1 for in range:2 print("loop:", i)