Python查看帮助---help函数

查看所有的关键字：help("keywords")

查看所有的modules：help("modules")

单看所有的modules中包含指定字符串的modules： help("modules yourstr")

查看中常见的topics： help("topics")

 

>>> help("topics")

Here is a list of available topics.  Enter any topic name to get more help.

ASSERTION           DEBUGGING           LITERALS            SEQUENCEMETHODS2
ASSIGNMENT          DELETION            LOOPING             SEQUENCES
ATTRIBUTEMETHODS    DICTIONARIES        MAPPINGMETHODS      SHIFTING
ATTRIBUTES          DICTIONARYLITERALS  MAPPINGS            SLICINGS
AUGMENTEDASSIGNMENT DYNAMICFEATURES     METHODS             SPECIALATTRIBUTES
BACKQUOTES          ELLIPSIS            MODULES             SPECIALIDENTIFIERS
BASICMETHODS        EXCEPTIONS          NAMESPACES          SPECIALMETHODS
BINARY              EXECUTION           NONE                STRINGMETHODS
BITWISE             EXPRESSIONS         NUMBERMETHODS       STRINGS
BOOLEAN             FILES               NUMBERS             SUBSCRIPTS
CALLABLEMETHODS     FLOAT               OBJECTS             TRACEBACKS
CALLS               FORMATTING          OPERATORS           TRUTHVALUE
CLASSES             FRAMEOBJECTS        PACKAGES            TUPLELITERALS
CODEOBJECTS         FRAMES              POWER               TUPLES
COERCIONS           FUNCTIONS           PRECEDENCE          TYPEOBJECTS
COMPARISON          IDENTIFIERS         PRINTING            TYPES
COMPLEX             IMPORTING           PRIVATENAMES        UNARY
CONDITIONAL         INTEGER             RETURNING           UNICODE
CONTEXTMANAGERS     LISTLITERALS        SCOPING             
CONVERSIONS         LISTS               SEQUENCEMETHODS1 

　

例如想要查看CALLS主题的帮助，则：help("CALLS")

 

查看标准库中的module：import os.path + help("os.path")
查看内置的类型：help("list")
查看类型的成员方法：help("str.find") 
查看内置函数：help("open")