0 basic python-14.3 Python documentation resources: Help function

In addition to providing __doc__ to query the document string, Python also provides another way to query the document string: Help

Here's a class we built ourselves, using Help to print, to form related report information

>>> class Test (): ' This is a test class ' Def HelloWorld (): ' Test method ' print (' Hello World ') >>> help (Test) to on class Test in Module __main__:class Test (builtins.object) |  This is a Test class |   |  Methods defined here: |   |  HelloWorld () |      Test Method |   |  ---------------------------------------------------------------------- |  Data descriptors defined here: |   |  __dict__ |      Dictionary for instance variables (if defined) |   |  __weakref__ |      

Note: You must fill in the name when using Help, and you cannot use an empty object substitution, for example:

>>> Help (") >>> help (str) Help on Class str in module Builtins:class str (object) |  STR (object= ")-str |  STR (bytes_or_buffer[, encoding[, errors]), str |  

However, if you call the method below the object, we can implement it by using an empty object

>>> help (". Upper) Help on built-in function upper:upper (...) method of Builtins.str instance S.upper    ()-> ; STR        Return a copy of S converted to uppercase.>>> help ([].append) Help on built-in function append:append (.. .) Method of Builtins.list Instance    

It is also important to note that there is no parentheses behind the method, the parentheses will not be queried, even if the method must take parameters, and do not use parentheses

>>> help (". Replace)" On built-in function Replace:replace (...) method of Builtins.str instance    S.replace (old, new[, Count])-STR        Return a copy of S with all occurrences of the substring old    replaced by new.
   if The optional argument count is    

In summary, this section provides a brief explanation of the use of Help

This chapter is here, thank you.

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0 basic python-14.3 Python documentation resources: Help function