Python 数组截取
- # 数据源
- names = ['a', 'b', 'c', 'd', 'e', 'f']
-
- # 正常获取
- print(names[1]) # b
-
- # 截取
- print(names[0:3]) # ['a', 'b', 'c']
- print(names[3:10]) # ['d', 'e', 'f']
-
- # 截取：从指定开始直接到指定结尾
- print(names[3:]) # ['d', 'e', 'f']
- print(names[:3]) # ['a', 'b', 'c']
-
- # 倒着切
- print(names[-2: -1]) # ['e']
- print(names[-2:]) # ['e', 'f']
-
- # 跳着切，步长
- print(names[0: 5: 2]) # ['a', 'c', 'e']
- print(names[0::2]) # ['a', 'c', 'e']
- print(names[::2]) # ['a', 'c', 'e']
-
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