search
HomeBackend DevelopmentPython Tutorialpython开发中range()函数用法实例分析

本文实例讲述了python开发中range()函数用法。分享给大家供大家参考,具体如下:

python中的range()函数的功能很强大,所以我觉得很有必要和大家分享一下

就好像其API中所描述的:

If you do need to iterate over a sequence of numbers, the built-in function range() comes in handy. It generates arithmetic progressions

下面是我做的demo:

#如果你需要遍历一个数字序列,可以是使用python中内建的函数range()
#如下面要遍历一个列表test_list
test_list = [1,3,4,'Hongten',3,6,23,'hello',2]
for i in range(len(test_list)):
  print(test_list[i],end=',')
print()  
print('#####################################')

#或者用range()函数生成一个列表
for i in range(5):
  print(i,end=',')
print()  
print('#####################################')
#python中的内置函数range(10),其中参数'10'代表:从0到10的一个序列
#即长度为10的一个序列
print('range(10)表示:',range(10))
listA = [i for i in range(10)]
print(listA)
print('#####################################')
#当然,我们可以自定义我们需要的起始点和结束点
#我们定义了一个从5开始的起始点,到100结束的结束点
print('range(5,100)表示:',range(5,100))
listB = [i for i in range(5,100)]
print(listB)
print('#####################################')
#定义了这些后,我们还可以定义步长
#下面我们定义一个从1开始到30结束,步长为3的列表
print('range(1,30,3)表示:',range(1,30,3))
listC = [i for i in range(1,30,3)]
print(listC)

运行效果:

Python 3.3.2 (v3.3.2:d047928ae3f6, May 16 2013, 00:03:43) [MSC v.1600 32 bit (Intel)] on win32
Type "copyright", "credits" or "license()" for more information.
>>> ================================ RESTART ================================
>>> 
1,3,4,Hongten,3,6,23,hello,2,
#####################################
0,1,2,3,4,
#####################################
range(10)表示: range(0, 10)
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
#####################################
range(5,100)表示: range(5, 100)
[5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99]
#####################################
range(1,30,3)表示: range(1, 30, 3)
[1, 4, 7, 10, 13, 16, 19, 22, 25, 28]
>>>

希望本文所述对大家Python程序设计有所帮助。

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Python: compiler or Interpreter?Python: compiler or Interpreter?May 13, 2025 am 12:10 AM

Python is an interpreted language, but it also includes the compilation process. 1) Python code is first compiled into bytecode. 2) Bytecode is interpreted and executed by Python virtual machine. 3) This hybrid mechanism makes Python both flexible and efficient, but not as fast as a fully compiled language.

Python For Loop vs While Loop: When to Use Which?Python For Loop vs While Loop: When to Use Which?May 13, 2025 am 12:07 AM

Useaforloopwheniteratingoverasequenceorforaspecificnumberoftimes;useawhileloopwhencontinuinguntilaconditionismet.Forloopsareidealforknownsequences,whilewhileloopssuitsituationswithundeterminediterations.

Python loops: The most common errorsPython loops: The most common errorsMay 13, 2025 am 12:07 AM

Pythonloopscanleadtoerrorslikeinfiniteloops,modifyinglistsduringiteration,off-by-oneerrors,zero-indexingissues,andnestedloopinefficiencies.Toavoidthese:1)Use'i

For loop and while loop in Python: What are the advantages of each?For loop and while loop in Python: What are the advantages of each?May 13, 2025 am 12:01 AM

Forloopsareadvantageousforknowniterationsandsequences,offeringsimplicityandreadability;whileloopsareidealfordynamicconditionsandunknowniterations,providingcontrolovertermination.1)Forloopsareperfectforiteratingoverlists,tuples,orstrings,directlyacces

Python: A Deep Dive into Compilation and InterpretationPython: A Deep Dive into Compilation and InterpretationMay 12, 2025 am 12:14 AM

Pythonusesahybridmodelofcompilationandinterpretation:1)ThePythoninterpretercompilessourcecodeintoplatform-independentbytecode.2)ThePythonVirtualMachine(PVM)thenexecutesthisbytecode,balancingeaseofusewithperformance.

Is Python an interpreted or a compiled language, and why does it matter?Is Python an interpreted or a compiled language, and why does it matter?May 12, 2025 am 12:09 AM

Pythonisbothinterpretedandcompiled.1)It'scompiledtobytecodeforportabilityacrossplatforms.2)Thebytecodeistheninterpreted,allowingfordynamictypingandrapiddevelopment,thoughitmaybeslowerthanfullycompiledlanguages.

For Loop vs While Loop in Python: Key Differences ExplainedFor Loop vs While Loop in Python: Key Differences ExplainedMay 12, 2025 am 12:08 AM

Forloopsareidealwhenyouknowthenumberofiterationsinadvance,whilewhileloopsarebetterforsituationswhereyouneedtoloopuntilaconditionismet.Forloopsaremoreefficientandreadable,suitableforiteratingoversequences,whereaswhileloopsoffermorecontrolandareusefulf

For and While loops: a practical guideFor and While loops: a practical guideMay 12, 2025 am 12:07 AM

Forloopsareusedwhenthenumberofiterationsisknowninadvance,whilewhileloopsareusedwhentheiterationsdependonacondition.1)Forloopsareidealforiteratingoversequenceslikelistsorarrays.2)Whileloopsaresuitableforscenarioswheretheloopcontinuesuntilaspecificcond

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

SecLists

SecLists

SecLists is the ultimate security tester's companion. It is a collection of various types of lists that are frequently used during security assessments, all in one place. SecLists helps make security testing more efficient and productive by conveniently providing all the lists a security tester might need. List types include usernames, passwords, URLs, fuzzing payloads, sensitive data patterns, web shells, and more. The tester can simply pull this repository onto a new test machine and he will have access to every type of list he needs.