使用dir函数查看list都有哪些命令可以使用
>>>dir(list) [‘__add__‘, ‘__class__‘, ‘__contains__‘, ‘__delattr__‘, ‘__delitem__‘, ‘__delslice__‘, ‘__doc__‘, ‘__eq__‘, ‘__format__‘, ‘__ge__‘, ‘__getattribute__‘, ‘__getitem__‘, ‘__getslice__‘, ‘__gt__‘, ‘__hash__‘, ‘__iadd__‘, ‘__imul__‘, ‘__init__‘, ‘__iter__‘, ‘__le__‘, ‘__len__‘, ‘__lt__‘, ‘__mul__‘, ‘__ne__‘, ‘__new__‘, ‘__reduce__‘, ‘__reduce_ex__‘, ‘__repr__‘, ‘__reversed__‘, ‘__rmul__‘, ‘__setattr__‘, ‘__setitem__‘, ‘__setslice__‘, ‘__sizeof__‘, ‘__str__‘, ‘__subclasshook__‘, ‘append‘, ‘count‘, ‘extend‘, ‘index‘, ‘insert‘, ‘pop‘, ‘remove‘, ‘reverse‘, ‘sort‘]
>>> list.append.__doc__ ‘L.append(object) -- append object to end‘
正如doc文件描述的append函数是用于附加对象到列表的末尾。
>>> list.count.__doc__ ‘L.count(value) -> integer -- return number of occurrences of value‘
返回目标值出现的次数。
>>> list.extend.__doc__ ‘L.extend(iterable) -- extend list by appending elements from the iterable‘
附加元素到列表的末尾，从而来扩展列表。
>>> list.index.__doc__ ‘L.index(value, [start, [stop]]) -> integer -- return first index of value.\nRaises ValueError if the value is not present.‘
返回目标值第一次出现位置，如果不存在则抛出错误。可以设置查找的开始和结束位置。
>>> list.insert.__doc__ ‘L.insert(index, object) -- insert object before index‘
在指定位置插入对象
>>> list.pop.__doc__ ‘L.pop([index]) -> item -- remove and return item at index (default last).\nRaises IndexError if list is empty or index is out of range.‘
>>> list.remove.__doc__ ‘L.remove(value) -- remove first occurrence of value.\nRaises ValueError if the value is not present.‘
原文：http://www.cnblogs.com/codeforever/p/3902262.html