Pipe character in Python

I see a "pipe" character ( | ) used in a function call:

res = c1.create(go, come, swim, "", startTime, endTime, "OK", ax|bx)

What is the meaning of the pipe in ax|bx ?

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It is a bitwise OR of integers. For example, if one or both of ax or bx are 1 , this evaluates to 1 , otherwise to 0 . It also works on other integers, for example 15 | 128 = 143 15 | 128 = 143 , ie 00001111 | 10000000 = 10001111 00001111 | 10000000 = 10001111 in binary.

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这也是联合集合运算符

set([1,2]) | set([2,3])

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按位或。

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