如何看待 2016 年 5 月 3 日 Python PEP8 风格的改动？-Python Tutorial-php.cn

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如何看待 2016 年 5 月 3 日 Python PEP8 风格的改动？

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Jun 06, 2016 pm 04:23 PM

andpythonstyle

2016年5月3日 PEP8 发了一版更新：PEP 8 -- Style Guide for Python Code，同事在进行代码检查的时候被发现，之前写的 if 条件被爆风格错误，原因是 and被放在了分行的开头，在新的PEP8规范里建议将 and 放在一行结尾，理由为换行更明确，但放在前面应该更清晰语句之间的关系呀，大家如何看待 and在if条件的位置，以及这次的更新？

回复内容：

PEP 8在2016年4月15日发布了一版更新，将原来规定的「换行符应该放在二元运算符之后」改成了「换行符建议放在二元运算符之前」。

看了下更新的理由，似乎是有人考古挖出了Donald Knuth大爷的著作"The TeXbook"，然后发现书中Displayed Equation一章里Knuth表示公式在多行的情况下理应把换行符放在二元或关系运算符之前：

这么做的理由似乎是显得更加易读，比如PEP 8里给的例子：

income = (gross_wages +
          taxable_interest +
          (dividends - qualified_dividends) -
          ira_deduction -
          student_loan_interest)

用pycharm没有波浪线就看着舒服瞎折腾。。。原来的PEP风格 +1
破Python吃枣药丸 +1

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