1 a = "hello" 2 a1 = a[1] 3 a2 = a[0:2] 4 print(a1) 5 print(a2)
我们通过索引获取字符串中指定位数的字符
通过切片获取指定区间范围的所有字符 范围大于等于开始小于末尾
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