用 Python 换行 [英] Wrap long lines in Python

问题描述

如何在不牺牲缩进的情况下在 Python 中换行?

How do I wrap long lines in Python without sacrificing indentation?

例如:

def fun():
    print '{0} Here is a really long sentence with {1}'.format(3, 5)

假设这超过了 79 个字符的推荐限制.我阅读它的方式，这里是如何缩进它:

Suppose this goes over the 79 character recommended limit. The way I read it, here is how to indent it:

def fun():
    print '{0} Here is a really long \
sentence with {1}'.format(3, 5)

但是，使用这种方法，连续行的缩进与 fun() 的缩进匹配.这看起来有点丑.如果有人要检查我的代码，由于这个 print 语句，不均匀的缩进看起来会很糟糕.

However, with this approach, the indentation of the continued line matches the indentation of the fun(). This looks kinda ugly. If someone was to go through my code, it would look bad to have uneven indentation because of this print statement.

如何在不牺牲代码可读性的情况下有效地缩进这样的行?

How do I indent lines like this effectively without sacrificing code readability?

推荐答案

def fun():
    print(('{0} Here is a really long '
           'sentence with {1}').format(3, 5))

相邻的字符串文字在编译时连接起来，就像在 C 中一样.http://docs.python.org/reference/lexical_analysis.html#string-literal-concatenation 是了解更多信息的好地方.

Adjacent string literals are concatenated at compile time, just as in C. http://docs.python.org/reference/lexical_analysis.html#string-literal-concatenation is a good place to start for more info.

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