python自带help功能怎么使用

第python自带help功能怎么使用C:\Users\wusongpython

Python3.8.2rc1(tags/v3.8.2rc1:8623e68,Feb112025,10:46:21)[MSCv.191664bit(AMD64)]onwin32

Typehelp,copyright,creditsorlicenseformoreinformation.

输入help()

help

Typehelp()forinteractivehelp,orhelp(object)forhelpaboutobject.

help()

WelcometoPython3.8shelputility!

IfthisisyourfirsttimeusingPython,youshoulddefinitelycheckout

thetutorialontheInternetat/3.8/tutorial/.

Enterthenameofanymodule,keyword,ortopictogethelponwriting

PythonprogramsandusingPythonmodules.Toquitthishelputilityand

returntotheinterpreter,justtypequit.

TogetalistofavAIlablemodules,keywords,symbols,ortopics,type

modules,keywords,symbols,ortopics.Eachmodulealsocomes

withaone-linesummaryofwhatitdoes;tolistthemoduleswhosename

orsummarycontainagivenstringsuchasspam,typemodulesspam.

help

这句话：Togetalistofavailablemodules,keywords,symbols,ortopics,typemodules,keywords,symbols,ortopics.

意思就是：

要获取可用模块、关键字、符号或主题的列表，请键入模块、关键字、符号或主题。

modules

我们先看下modules

在help模式下输入：modules

helpmodules

PleasewaitamomentwhileIgatheralistofallavailablemodules...

D:\software_install\python\lib\pkgutil.py:92:UserWarning:Thenumpy.array_apisubmoduleisstillexperimental.SeeNEP47.

__import__()

PILasyncpgidnaselenium

PyInstalleratexitimaplibserial

PyQt5atlastkimghdrsetuptools

__future__attrimpshelve

_abcattrsimportlibshlex

_astaudioopinspectshutil

_asynciobackportsiosignal

_bisectbase64iPaddresssimplejson

_blake2bcryptitertoolssite

_bootlocalebdbjinja2six

_bz2billiardjsonsmtpd

_cffi_backendbinasciikeywordsmtplib

_codecsbinhexkiwisolversndhdr

_codecs_cnbisectkombusniffio

_codecs_hkbroadcasterlib2to3socket

_codecs_iso2025builtinslibfuturizesocketserver

_codecs_jpbz2libpasteurizesocks

_codecs_krcProfilelinecachesockshandler

_codecs_twcalendarlocalesortedcontainers

_collectionsceleryloggingsqlalchemy

_collections_abccertifilogurusqlite3

_compat_picklecffilzmasqlparse

_compressioncgimailboxsre_compile

_contextvarscgitbmailcapsre_constants

_csvcharset_normalizermarkupsafesre_parse

_ctypeschunkmarshalssl

_ctypes_testclickmathstarlette

_datetimeclick_didyoumeanmatplotlibstat

_decimalclick_pluginsmimetypesstatistics

_dummy_threadclick_replmmapstring

_elementtreecmathmodulefinderstringprep

_functoolscmdmsilibstruct

_hashlibcodemsvcrtsubprocess

_heapqcodecsmultiprocessingsunau

_impcodeopnaclsymbol

_iocollectionsnetrcsymtable

_jsoncoloramanntplibsys

_localecolorsysntsysconfig

_lsprofcompileallntpathtabnanny

_lzmaconcurrentnturl2pathtarfile

_markupbaseconfigparsernumberstelnetlib

_md5contextlibnumpytempfile

_msicontextvarsopcodetest

_multibytecodeccontourpyoperatortextwrap

_multiprocessingcopyoptparsetftpy

_opcodecopyregordered_setthis

_operatorcryptordlookupthreading

_osx_supportcryptographyostime

_overlappedcsvoutcometimeit

_picklectypespackagingtkinter

_py_abccursesparamikotoken

_pydecimalcv2parsertokenize

_pyinstaller_hooks_contribcyclerpasttortoise

_pyiodatabasespathlibtrace

_queuedataclassespdbtraceback

_randomdatetimepefiletracemalloc

_ruamel_yamldateutilpeutilstrio

_sha1dbmpickletrio_websocket

_sha256decimalpickletoolstty

_sha3deepdiffpipturtle

_sha512difflibpipesturtledemo

_signaldispkg_resourcestypes

_sitebuiltinsdistlibpkgutiltyping

_socketdistutilsplatformtyping_extensions

_sqlite3djangoplatformdirstzdata

_sredoctestplistlibunicodedata

_ssldotenvpoplibunittest

_statdummy_threadingposixpathurllib

_statisticseasy_installpprinturllib3

_stringemailprettytableuu

_strptimeencodingsprofileuuid

_structensurepipprompt_toolkituvicorn

_symtableenumpstatsvenv

_testbuffererrnopsutilvine

_testcapifastapiptyvirtualenv

_testconsolefaulthandlerpy_compilewarnings

_testimportmultiplefilecmppyclbrwatchfiles

_testmultiphasefileinputpycparserwave

_threadfilelockpydanticwcwidth

_threading_localfnmatchpydocweakref

_tkinterfontToolspydoc_datawebbrowser

_tracemallocformatterpyechartswebsockets

_warningsfractionspyexpatwin32_setctime

_weakrefftplibpylabwin32ctypes

_weakrefsetfunctoolspyparsingwinreg

_winapifuturepyqt5_pluginswinsound

_xxsubinterpretersgcpyqt5_toolswsgiref

_yamlgenericpathpytzwsproto

abcgetoptqt5_applicationsxdrlib

aifcgetpassqt5_toolsxlrd

altgraphgettextqueuexlwt

amqpglobquoprixml

antigravitygreenletrandomxmlrpc

anyiogziprexxsubtype

argparseh21reprlibyaml

arrayhashlibrequestszipapp

asgirefheapqrlcompleterzipfile

asthmacrunpyzipimport

async_generatorhtmlschedzlib

asynchathttpsecrets

asynciohttptoolsselect

asyncoreidlelibselectors

Enteranymodulenametogetmorehelp.Or,typemodulesspamtosearch

formoduleswhosenameorsummarycontainthestringspam.

help

从这里可以看出还是有相当多的模块，比如我们常用的re,xlrd当然也有我们后期安装的；挑一个进去看看，有啥风景，就挑xlrd

helpxlrd

Helponpackagexlrd:

xlrd

DESCRIPTION

#Copyright(c)2005-2012StephenJohnMachin,LingfoPtyLtd

#Thismoduleispartofthexlrdpackage,whichisreleasedundera

#BSD-stylelicence.

PACKAGECONTENTS

biffh

book

compdoc

formatting

formula

info

sheet

timemachine

xldate

FUNCTIONS

count_records(filename,outfile=colorama.ansitowin32.StreamWrapperobjectat0x000001D26AC13D00)

Fordebuggingandanalysis:summarisethefilesBIFFrecords.

ie:produceasortedfileof``(record_name,count)``.

:paramfilename:Thepathtothefiletobesummarised.

:paramoutfile:Anopenfile,towhichthesummaryiswritten.

--More--行数:

这里面会详细介绍xlrd模块的名字，描述，模块目录、功能、版本、文件位置等信息，在最后一行看到--More--，这是一个分页符，表示当前页面不能全部显示所有信息，需要部分分页操作，可以使用空格键切换下一页，也可以使用回车键看下一行，看你自己的需求进行操作，如果不想看了可输入q退出阅读模式，进入help模式，再输入q则可以继续退出help模式；

helpq

YouarenowleavinghelpandreturningtothePythoninterpreter.

Ifyouwanttoaskforhelponaparticularobjectdirectlyfromthe

interpreter,youcantypehelp(object).Executinghelp(string)

hasthesameeffectastyping