python字符串列表学习

　　切片：

顾首不顾尾：

#author: janx
name=["beijing","shanghai","guangzhou","shengzhen"]

print(name[1:3])
print(name[-2:-1])
print(name[-2:])
print(name[0:3])
print(name[:3])
最左端和最右端可以不填数字

['shanghai', 'guangzhou']
['guangzhou']
['guangzhou', 'shengzhen']
['beijing', 'shanghai', 'guangzhou']
['beijing', 'shanghai', 'guangzhou']

 

插入：

　name.insert(2,"nanjing")

   print(name)

替换：

  name[2]="guizhou"

 print(name)

删除：

name.pop()
print(name)
或者del name[2]

['shanghai', 'guangzhou']
['guangzhou']
['guangzhou', 'shengzhen']
['beijing', 'shanghai', 'guangzhou']
['beijing', 'shanghai', 'guangzhou']
['beijing', 'shanghai', 'nanjing', 'guangzhou', 'shengzhen']
['beijing', 'shanghai', 'guizhou', 'guangzhou', 'shengzhen']
['beijing', 'shanghai', 'guizhou', 'guangzhou']