>>> # I can say anything here, even if Python doesn't like it,
... # because I'm protected by the awesome
... # octothorpe.
...
>>>
但如果
#
出现在字符串中,威猛的
octothorpe
就会又重新扮演起它原本的角色,作为一个
古老而普通的
#
字符。
>>> print("No comment: quotes make the # harmless.")
No comment: quotes make the # harmless.
4.2
使用
\
续行
代码行的长度保持在合理程度内能够提高程序的可读性。推荐的(并非强制要求)行最大
长度是
80
个字符
。如果这个长度还不够,可以使用
续行字符
\
(反斜线)。只需把
\
放在
行尾,
Python
就会认为后续内容仍在同一行。
假如我想累加前
5
个数,那么可以一次写一行:
>>> sum = 0
>>> sum += 1
>>> sum += 2
>>> sum += 3
>>> sum += ...
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