python 3--リスト操作-深いコピー、浅いコピー、遍歴

リスト操作-浅いコピー(copy)、深いコピー
1.浅いコピー(copy)、深いコピー
1.1浅いコピー

# coding:utf-8
# python3 -- list    （  copy）

#         ：       copy     

#    ，      ，2             
list_names = ["he", "li", ["liu", "li"], "fu", "chen"]
list_names2 = list_names.copy()
list_names[3] = " "
print(list_names)
print(list_names2)

#   name，   list_names        
name = list_names
print(name)
#     ：，  2      ，          
list_names[2][0] = " "
print(list_names)
print(list_names2)

2.深いコピー

# coding:utf-8
# python3 -- list    （   copy）

import copy

#    ：            list_names        
list_names = ["he", "li", ["liu", "li"], "fu", "chen"]
list_names2 = copy.deepcopy(list_names)
list_names[3] = " "
print(list_names)
print(list_names2)

#     
list_names[2][0] = " "
print(list_names)
print(list_names2)

3.パスリストスライス

# coding:utf-8
# python3 -- list     （  ）
list_names = ["he", ["liu", "li"], "li",  "fu", "chen", "liu", "gao"]
#     
# range(1, 10, 2)
print(list_names[0:-1:2])
print(list_names[::2])
#   0   -1 ，      
print(list_names[:])

for i in list_names:
    print(i)