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Python數據類型詳解(二)列表

 更新時間:2016年05月08日 09:32:49   作者:aylin  
本文給大家詳細介紹的是Python數據類型中的列表(list),非常的簡單實用,有需要的小伙伴可以參考下

一.基本數據類型

  整數:int
  字符串:str(注:\t等于一個tab鍵)
  布爾值: bool
  列表:list (元素的集合)
  列表用[]
  元祖:tuple
  元祖用()
  字典:dict

注:所有的數據類型都存在想對應的類列里

二.列表所有數據類型:

基本操作:

索引,切片,追加,刪除,長度,切片,循環(huán),包含

list

class list(object):
  """
  list() -> new empty list
  list(iterable) -> new list initialized from iterable's items
  """
  def append(self, p_object): # real signature unknown; restored from __doc__
    """ L.append(object) -> None -- append object to end """
    (L.append(對象)- >——沒有一個對象附加到結束)
    pass

  def clear(self): # real signature unknown; restored from __doc__
    """ L.clear() -> None -- remove all items from L """
    (L.clear()- >沒有,把所有項目從L)
    pass

  def copy(self): # real signature unknown; restored from __doc__
    """ L.copy() -> list -- a shallow copy of L """
    (L.copy()- >列表- L的淺拷貝)
    return []

  def count(self, value): # real signature unknown; restored from __doc__
    """ L.count(value) -> integer -- return number of occurrences of value """
    (L.count(價值)- >整數,返回值的出現次數)
    return 0

  def extend(self, iterable): # real signature unknown; restored from __doc__
    """ L.extend(iterable) -> None -- extend list by appending elements from the iterable """
    (L.extend(iterable)- >沒有——從iterable擴展列表通過添加元)
    pass

  def index(self, value, start=None, stop=None): # real signature unknown; restored from __doc__
    """
    L.index(value, [start, [stop]]) -> integer -- return first index of value.
    Raises ValueError if the value is not present.
    (l指數(價值,[開始,[不要]])- >整數,返回第一索引值。提出了ValueError如果不存在的價值。)
    """
    return 0

  def insert(self, index, p_object): # real signature unknown; restored from __doc__
    """ L.insert(index, object) -- insert object before index """
    (l插入(指數(對象)——前插入對象索引)
    pass

  def pop(self, index=None): # real signature unknown; restored from __doc__
    """
    L.pop([index]) -> item -- remove and return item at index (default last).
    Raises IndexError if list is empty or index is out of range.
    (L.pop((指數))- >項目——刪除并返回項指數(默認)。提出了IndexError如果列表為空或索引的范圍。)
    """
    pass

  def remove(self, value): # real signature unknown; restored from __doc__
    """
    L.remove(value) -> None -- remove first occurrence of value.
    Raises ValueError if the value is not present.
    """
    (L.remove(價值)- >沒有,刪除第一次出現的值。提出了ValueError如果不存在的價值。)
    pass

  def reverse(self): # real signature unknown; restored from __doc__
    """ L.reverse() -- reverse *IN PLACE* """
    pass

  def sort(self, key=None, reverse=False): # real signature unknown; restored from __doc__
    """ L.sort(key=None, reverse=False) -> None -- stable sort *IN PLACE* """
    pass

  def __add__(self, *args, **kwargs): # real signature unknown
    """ Return self+value. """
    pass

  def __contains__(self, *args, **kwargs): # real signature unknown
    """ Return key in self. """
    pass

  def __delitem__(self, *args, **kwargs): # real signature unknown
    """ Delete self[key]. """
    pass

  def __eq__(self, *args, **kwargs): # real signature unknown
    """ Return self==value. """
    pass

  def __getattribute__(self, *args, **kwargs): # real signature unknown
    """ Return getattr(self, name). """
    pass

  def __getitem__(self, y): # real signature unknown; restored from __doc__
    """ x.__getitem__(y) <==> x[y] """
    pass

  def __ge__(self, *args, **kwargs): # real signature unknown
    """ Return self>=value. """
    pass

  def __gt__(self, *args, **kwargs): # real signature unknown
    """ Return self>value. """
    pass

  def __iadd__(self, *args, **kwargs): # real signature unknown
    """ Implement self+=value. """
    pass

  def __imul__(self, *args, **kwargs): # real signature unknown
    """ Implement self*=value. """
    pass

  def __init__(self, seq=()): # known special case of list.__init__
    """
    list() -> new empty list
    list(iterable) -> new list initialized from iterable's items
    # (copied from class doc)
    """
    pass

  def __iter__(self, *args, **kwargs): # real signature unknown
    """ Implement iter(self). """
    pass

  def __len__(self, *args, **kwargs): # real signature unknown
    """ Return len(self). """
    pass

  def __le__(self, *args, **kwargs): # real signature unknown
    """ Return self<=value. """
    pass

  def __lt__(self, *args, **kwargs): # real signature unknown
    """ Return self<value. """
    pass

  def __mul__(self, *args, **kwargs): # real signature unknown
    """ Return self*value.n """
    pass

  @staticmethod # known case of __new__
  def __new__(*args, **kwargs): # real signature unknown
    """ Create and return a new object. See help(type) for accurate signature. """
    pass

  def __ne__(self, *args, **kwargs): # real signature unknown
    """ Return self!=value. """
    pass

  def __repr__(self, *args, **kwargs): # real signature unknown
    """ Return repr(self). """
    pass

  def __reversed__(self): # real signature unknown; restored from __doc__
    """ L.__reversed__() -- return a reverse iterator over the list """
    pass

  def __rmul__(self, *args, **kwargs): # real signature unknown
    """ Return self*value. """
    pass

  def __setitem__(self, *args, **kwargs): # real signature unknown
    """ Set self[key] to value. """
    pass

  def __sizeof__(self): # real signature unknown; restored from __doc__
    """ L.__sizeof__() -- size of L in memory, in bytes """
    pass

  __hash__ = None

三.所有列表數據類型舉例

#!/usr/bin/env python
# -*- coding:utf-8 -*-
 
#append追加
name_list = ["zhangyanlin","suoning","nick"]
name_list.append('zhang')
print(name_list)
 
#count制定字符出現幾次
name_list = ["zhangyanlin","suoning","nick"]
name_list.append('zhang')
name_list.append('zhang')
name_list.append('zhang')
print(name_list.count('zhang'))
 
#extend可擴展,批量往里加數據
name_list = ["zhangyanlin","suoning","nick"]
name = ["aylin","zhang","yan","lin"]
name_list.extend(name)
print(name_list)
 
#index找到字符所在的位置
name_list = ["zhangyanlin","suoning","nick"]
print(name_list.index('nick'))
 
#insert插入,往索引里面插入值
name_list = ["zhangyanlin","suoning","nick"]
name_list.insert(1,"zhang")
print(name_list)
 
#pop在原列表中移除掉最后一個元素,并賦值給另一個變量
name_list = ["zhangyanlin","suoning","nick"]
name = name_list.pop()
print(name)
 
#remove移除,只移除從左邊找到的第一個
name_list = ["zhangyanlin","suoning","nick"]
name_list.remove('nick')
print(name_list)
 
#reverse反轉
name_list = ["zhangyanlin","suoning","nick"]
name_list.reverse()
print(name_list)
 
#del刪除其中元素,刪除1到3之間的
name_list = ["zhangyanlin","suoning","nick"]
del name_list[1:3]
print(name_list)

四.索引

name_list = ["zhangyanlin","suoning""aylin""nick"]
print(name_list[0])

五.切片

name_list = ["zhangyanlin","suoning""aylin""nick"]
print(name_list[0:2])

六.總長度len

name_list = ["zhangyanlin","suoning""aylin""nick"]
print(name_list[1:len(name_list)])

七.for循環(huán)

name_list = ["zhangyanlin","suoning""aylin""nick"]
for i in name_list:
  print(i)

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