An in-depth look at the list of Python data types

1. Basic data types

Integer: int
String: str (note: t equals a tab key)
Boolean value: bool
List: list (a collection of elements)
Use []
for lists Originator: tuple
Yuanzu uses ()
Dictionary: dict
Note: All data types exist in the corresponding class column

2. List all data types:

Basic operations:

•Index
•Slice
•Add
•Delete
•Length
•Slice
•Loop
• Contains

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(对象)- >——没有一个对象附加到结束)
    pass

  def clear(self): # real signature unknown; restored from __doc__
    """ L.clear() -> None -- remove all items from L """
    (L.clear()- >没有,把所有项目从L)
    pass

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

  def count(self, value): # real signature unknown; restored from __doc__
    """ L.count(value) -> integer -- return number of occurrences of value """
    (L.count(价值)- >整数,返回值的出现次数)
    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)- >没有——从iterable扩展列表通过添加元)
    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指数(价值,[开始,[不要]])- >整数,返回第一索引值。提出了ValueError如果不存在的价值。)
    """
    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(指数(对象)——前插入对象索引)
    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((指数))- >项目——删除并返回项指数(默认)。提出了IndexError如果列表为空或索引的范围。)
    """
    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(价值)- >没有,删除第一次出现的值。提出了ValueError如果不存在的价值。)
    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

3. Examples of all list data types

#!/usr/bin/env python

# -*- coding:utf-8 -*-

 

#append追加

name_list = ["zhangyanlin","suoning","nick"]

name_list.append('zhang')

print(name_list)

 

#count制定字符出现几次

name_list = ["zhangyanlin","suoning","nick"]

name_list.append('zhang')

name_list.append('zhang')

name_list.append('zhang')

print(name_list.count('zhang'))

 

#extend可扩展，批量往里加数据

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个元素，并赋值给另一个变量

name_list = ["zhangyanlin","suoning","nick"]

name = name_list.pop()

print(name)

 

#remove移除,只移除从左边找到的第一个

name_list = ["zhangyanlin","suoning","nick"]

name_list.remove('nick')

print(name_list)

 

#reverse反转

name_list = ["zhangyanlin","suoning","nick"]

name_list.reverse()

print(name_list)

 

#del删除其中元素,删除1到3之间的

name_list = ["zhangyanlin","suoning","nick"]

del name_list[1:3]

print(name_list)

4. Index

name_list = ["zhangyanlin","suoning""aylin""nick"]

print(name_list[0])

5. Slicing

name_list = ["zhangyanlin","suoning""aylin""nick"]

print(name_list[0:2])

6. Total length len

name_list = ["zhangyanlin","suoning""aylin""nick"]

print(name_list[1:len(name_list)])

7. for loop

name_list = ["zhangyanlin","suoning""aylin""nick"]

for i in name_list:

  print(i)

The above is the complete list of in-depth understanding of Python data types brought by the editor. I hope you will support Script Home~