python: help 函数

# coding=utf-8

print(help('os'))                # 打印 os 模块 帮助信息
"""
Help on module os:

NAME
    os - OS routines for NT or Posix depending on what system we're on.

MODULE REFERENCE
    https://docs.python.org/3.6/library/os

    ...

DESCRIPTION
    ...

"""


print(help('int'))               # 打印 int 类型 帮助信息
"""
Help on class int in module builtins:

class int(object)
 |  int(x=0) -> integer
 |  int(x, base=10) -> integer
 |  

    ...

"""


print(help([10, 20, 30]))        # 打印 list 类型 帮助信息
"""
Help on list object:

class list(object)
 |  list() -> new empty list
 |  list(iterable) -> new list initialized from iterable's items
 |  
 |  Methods defined here:
 |  
 |  __add__(self, value, /)
 |      Return self+value.

    ...

"""


print(help([10, 20, 30].append)) # 打印 list 类型 的 append方法 帮助信息
"""
Help on built-in function append:

append(...) method of builtins.list instance
    L.append(object) -> None -- append object to end

None
"""