新的语法只要求给 print() 函数的关键字参数 file 传递一个值就可以了。
The new syntax is now to simply pass in a value to the keyword argument file in the print() function. For example
在套接字函数调用中指定的一个协议不支持请求的套接字类型的语法。
A protocol was specified in the socket function call that does not support the semantics of the socket type requested.
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