The << and >> operators are bitshift operators. x << 1 shifts all the bits in x up to the next most significant bit, effectively multiplying by 2. More generally, x << n shifts the bits up n positions. To understand how this operation works it is easiest to look at the binary representation:
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<<和>>运算符是 位移运算符。 <代码>x << 1 将x中的所有位向上移动到下一个最高有效位，有效地乘以 2。更一般地，x << n将位向上移动 n 个位置。要了解此操作的工作原理，最简单的方法是查看 二进制 表示形式：类似地，
>>运算符将位向下移动：The
<<and>>operators are bitshift operators.x << 1shifts all the bits inxup to the next most significant bit, effectively multiplying by 2. More generally,x << nshifts the bits up n positions. To understand how this operation works it is easiest to look at the binary representation:Similarly the
>>operator shifts the bits down:3 在二进制中为
11，左移一位为110，即十进制中的 6。想想
a << basa * (2 ** b)>>用于右移。想想a>> basa // (2 ** b)3, in binary, is
11and shifted to left one bit is110, or 6 in decimal.Think of
a << basa * (2 ** b)>>is for right-shifting. Think ofa >> basa // (2 ** b)这是一个轮班操作员。
http://docs.python.org/reference/expressions.html#shifting-operations
It's a shift operator.
http://docs.python.org/reference/expressions.html#shifting-operations
这是一个位移位，使用移位操作。
假设你有一个数字，查看最低位，你有 3：
0 0 1 1
如果你移动它，你会得到 6，或者：
0 1 1 0
It's a bit shift, using a shifting operation.
Say you have a number, and looking at the lowest bits, you have 3:
0 0 1 1
If you shift it, you'll get 6, or:
0 1 1 0