python 折行的正确姿势
在写 python 代码时，有时变量值是一个非常长的字符串，比如这样：
line = 'this is a very very very very very very very very very very long string'如果写在一行里，难看不说，可能还过不了一些代码风格检测。
那么应该怎么折行呢？
方案1
line = """
this is a very very very very
very very very very very very
very very very very very very
long string
"""但是这个方案有个弊端，本来是一行字符串，结果变成了多行，而且如果有缩进的话，本来表示缩进的空格，也作为字符串的一部分了。跟我们实际想要的并不一致。
方案2
line = 'this is a\
very very very
long string
'此方案解决了方案1里多余的换行符的问题，字符串真的是一行了。但是同样没解决缩进导致的多余的空格的问题
方案3
line = (
"this is a"
"very very very very"
"long string"
)此方案完美地解决了长字符串 折行/换行 的问题。 另外强调一下，如果有格式化字符串需求的话，应该这么写：
a = "test_str"
b = 123
line = (
"i have a string %s"
"and a number %d"
) % (a, b)妈妈再也不用担心我的一行代码太长了
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原始发表：2019-08-26 ，如有侵权请联系 cloudcommunity@tencent.com 删除
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