help函式是一個內建函式，用於檢視函式或模組用途的詳細說明

import copy
print(help(copy.copy))

Help on function copy in module copy:

copy(x)
Shallow copy operation on arbitrary Python objects.

See the module's __doc__ string for more info.

None

dir()函式時python的內建函式，dir()函式不帶引數時，返回當前範圍內的變數、方法和定義的型別列表，帶引數時，返回引數的屬性、方法列表

print(copy.copy)

['__annotations__', '__call__', '__class__', '__closure__', '__code__', '__defaults__', '__delattr__', '__dict__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__get__', '__getattribute__', '__globals__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__kwdefaults__', '__le__', '__lt__', '__module__', '__name__', '__ne__', '__new__', '__qualname__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__']