Python 中的 %i 和 %d 有什么区别？
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What is the difference between %i and %d in Python?
提问by
OK I was looking into number formatting and I found that you could use %dor %ito format an integer. For example:
好的，我正在研究数字格式，我发现您可以使用%d或%i来格式化整数。例如：
number = 8
print "your number is %i." % number
or
或者
number = 8
print "your number is %d." % number
But what is the difference? I mean i found something but it was total jibberish. Anyone speak Mild-Code or English here?
但有什么区别呢？我的意思是我找到了一些东西，但它完全是胡言乱语。这里有人说轻度代码或英语吗？
采纳答案by Martijn Pieters
Python copied the C formatting instructions.
Python 复制了 C 格式化指令。
For output, %iand %dare the exact same thing, both in Python and in C.
对于output，%iand%d是完全相同的东西，在 Python 和 C 中都是如此。
The difference lies in what these do when you use them to parse input, in C by using the scanf()function. See Difference between format specifiers %i and %d in printf.
不同之处在于当您使用它们在 C 中通过使用函数解析input时它们的scanf()作用。请参阅printf 中格式说明符 %i 和 %d 之间的区别。
Python doesn't have a scanfequivalent, but the Python string formatting operations retained the two options to remain compatible with C.
Python 没有scanf等效项，但 Python 字符串格式化操作保留了两个选项以保持与 C 兼容。
The new str.format()and format()format specification mini-languagedropped support for iand stuck with donly.
新的str.format()和format()格式规范的迷你语言放弃了支持i并d只坚持使用。
回答by Sven
There isn't any, see the Python String Formatting Manual: http://docs.python.org/2/library/stdtypes.html#string-formatting
没有，请参阅 Python 字符串格式手册：http: //docs.python.org/2/library/stdtypes.html#string-formatting
回答by tenstar
No difference.
没有不同。
And here's the proof.
这就是证据。
The reason why there are two is that, %i is just an alternative to %d ,if you want to look at it at a high level (from python point of view).
有两个的原因是， %i 只是 %d 的替代品，如果你想从更高的层次上看它（从python的角度来看）。
Here's what python.org has to say about %i: Signed integer decimal.
以下是 python.org 对 %i 的评论： Signed integer decimal.
And %d: Signed integer decimal.
还有 %d： Signed integer decimal.
%d stands for decimal and %i for integer.
%d 代表十进制，%i 代表整数。
but both are same, you can use both.
但两者都是相同的，您可以同时使用两者。
