Re: [Python-Dev] PEP 7 and braces { .... } on if

2017年6月03日 09:28:34 -0700

Yet about braces. PEP 7 implicitly forbids breaking the line before an opening brace. An opening brace should stay at the end the line of the outer compound statement.
 if (mro != NULL) {
 ...
 }
 else {
 ...
 }
 if (type->tp_dictoffset != 0 && base->tp_dictoffset == 0 &&
 type->tp_dictoffset == b_size &&
 (size_t)t_size == b_size + sizeof(PyObject *)) {
 return 0; /* "Forgive" adding a __dict__ only */
 }
But the latter example continuation lines are intended at the same level as the following block of code. I propose to make exception for that case and allow moving an open brace to the start of the next line.
 if (type->tp_dictoffset != 0 && base->tp_dictoffset == 0 &&
 type->tp_dictoffset == b_size &&
 (size_t)t_size == b_size + sizeof(PyObject *))
 {
 return 0; /* "Forgive" adding a __dict__ only */
 }
This adds a visual separation of a multiline condition from the following code.
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