blocks|key|600424|text|您可以使用命名参数。See+examples+here|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|600425|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.python.org/library/string.html#format-examples^0|A|H|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

You could use named parameters. <a href="http://docs.python.org/library/string.html#format-examples" rel="nofollow">See examples here</a>

blocks|key|815904|text|看一看Template+Strings|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|815905|entityMap|0|LINK|mutability|MUTABLE|url|http://docs.python.org/library/string.html#template-strings^0|3|G|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

have a look at <a href="http://docs.python.org/library/string.html#template-strings" rel="nofollow">Template Strings</a>

blocks|key|815952|text|改用字典吧。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|815953|var+=+'%25(foo)s+%25(foo)s+%25(foo)s'+%25+{+'foo':+'look_at_me_three_times'+}|code-block|syntax|javascript|815954|或具有显式编号的format。|offset|length|style|CODE|815955|var+=+'{0}+{0}+{0}'.format('look_at_meeee')|815956|或者带有命名参数的format。|815957|var+=+'{foo}+{foo}+{foo}'.format(foo+=+'python+you+so+crazy')|815958|entityMap^0|0|0|8|6|0|0|9|6|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|W|8|@$I|X|J|Y|K|L]]|9|@]|A|$]]|$1|M|3|N|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|10|8|@$I|11|J|12|K|L]]|9|@]|A|$]]|$1|Q|3|R|5|D|7|13|8|@]|9|@]|A|$E|F]]|$1|S|3|-4|5|6|7|14|8|@]|9|@]|A|$]]]|T|$]]

Use a dictionary instead.

<pre><code>var = '%(foo)s %(foo)s %(foo)s' % { 'foo': 'look_at_me_three_times' }
</code></pre>

Or <code>format</code> with explicit numbering.

<pre><code>var = '{0} {0} {0}'.format('look_at_meeee')
</code></pre>

Well, or <code>format</code> with named parameters.

<pre><code>var = '{foo} {foo} {foo}'.format(foo = 'python you so crazy')
</code></pre>

blocks|key|815976|text|使用新的string.format|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|815977|name+=+'Alex'
variable+=+"""My+name+is+{0}+and+it+has+been+{0}+since+I+was+born.
++++++++++My+parents+decided+to+call+me+{0}+because+they+thought+{0}+was+a+nice+name.
++++++++++{0}+is+the+same+as+{0}.""".format(name)|code-block|syntax|javascript|815978|entityMap^0|4|D|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

Use the new <code>string.format</code>:

<pre><code>name = 'Alex'
variable = """My name is {0} and it has been {0} since I was born.
 My parents decided to call me {0} because they thought {0} was a nice name.
 {0} is the same as {0}.""".format(name)
</code></pre>

blocks|key|600560|text|>>>+"%25(name)s+%25(name)s+hello!"+%25+dict(name='foo')
'foo+foo+hello!'|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|600561|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>&gt;&gt;&gt; "%(name)s %(name)s hello!" % dict(name='foo')
'foo foo hello!'
</code></pre>

blocks|key|816013|text|variable+=+"""My+name+is+{0}+and+it+has+been+{0}+since+I+was+born.
++++++++++++++My+parents+decided+to+call+me+{0}+because+they+thought+{0}+was+a+nice+name.
++++++++++++++{0}+is+the+same+as+{0}.""".format(name)|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|816014|unstyled|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|G|8|@]|9|@]|A|$B|C]]|$1|D|3|-4|5|E|7|H|8|@]|9|@]|A|$]]]|F|$]]

<pre><code>variable = """My name is {0} and it has been {0} since I was born.
 My parents decided to call me {0} because they thought {0} was a nice name.
 {0} is the same as {0}.""".format(name)
</code></pre>

blocks|key|600638|text|使用格式化字符串：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|600639|>>>+variable+=+"""My+name+is+{name}+and+it+has+been+{name}+since..."""
>>>+n+=+"alex"
>>>
>>>+variable.format(name=n)
'My+name+is+alex+and+it+has+been+alex+since...'|code-block|syntax|javascript|600640|{}中的文本可以是描述符或索引值。|600641|另一个花哨的技巧是使用字典结合**运算符定义多个变量。|600642|>>>+values+=+{"name":+"alex",+"color":+"red"}
>>>+"""My+name+is+{name}+and+my+favorite+color+is+{color}""".format(**values)
'My+name+is+alex+and+my+favorite+color+is+red'
>>>|600643|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|D|7|S|8|@]|9|@]|A|$E|F]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Use formatting strings:

<pre><code>&gt;&gt;&gt; variable = """My name is {name} and it has been {name} since..."""
&gt;&gt;&gt; n = "alex"
&gt;&gt;&gt;
&gt;&gt;&gt; variable.format(name=n)
'My name is alex and it has been alex since...'
</code></pre>

The text within the {} can be a descriptor or an index value.

Another fancy trick is to use a dictionary to define multiple variables in combination with the ** operator.

<pre><code>&gt;&gt;&gt; values = {"name": "alex", "color": "red"}
&gt;&gt;&gt; """My name is {name} and my favorite color is {color}""".format(**values)
'My name is alex and my favorite color is red'
&gt;&gt;&gt;
</code></pre>

blocks|key|816097|text|Python3.6引入了一种更简单的格式化字符串的方法。您可以在PEP+498中获取有关它的详细信息|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|816098|>>>+name+=+"Sam"
>>>+age+=+30
>>>+f"Hello,+{name}.+You+are+{age}."
'Hello,+Sam.+You+are+30.'|code-block|syntax|javascript|816099|它还支持运行时评估|816100|>>>f"{2+*+30}"
'60'|816101|它也支持字典操作|816102|>>>+comedian+=+{'name':+'Tom',+'age':+30}
>>>+f"The+comedian+is+{comedian['name']},+aged+{comedian['age']}."
+The+comedian+is+Tom,+aged+30.|816103|entityMap|0|LINK|mutability|MUTABLE|url|https://www.python.org/dev/peps/pep-0498/^0|W|7|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@$A|Z|B|10|1|11]]|C|$]]|$1|D|3|E|5|F|7|12|8|@]|9|@]|C|$G|H]]|$1|I|3|J|5|6|7|13|8|@]|9|@]|C|$]]|$1|K|3|L|5|F|7|14|8|@]|9|@]|C|$G|H]]|$1|M|3|N|5|6|7|15|8|@]|9|@]|C|$]]|$1|O|3|P|5|F|7|16|8|@]|9|@]|C|$G|H]]|$1|Q|3|-4|5|6|7|17|8|@]|9|@]|C|$]]]|R|$S|$5|T|U|V|C|$W|X]]]]

Python 3.6 has introduced a simpler way to format strings. You can get details about it in <a href="https://www.python.org/dev/peps/pep-0498/" rel="noreferrer">PEP 498</a>

<pre><code>&gt;&gt;&gt; name = "Sam"
&gt;&gt;&gt; age = 30
&gt;&gt;&gt; f"Hello, {name}. You are {age}."
'Hello, Sam. You are 30.'
</code></pre>

It also support runtime evaluation 

<pre><code>&gt;&gt;&gt;f"{2 * 30}"
'60'
</code></pre>

It supports dictionary operation too

<pre><code>&gt;&gt;&gt; comedian = {'name': 'Tom', 'age': 30}
&gt;&gt;&gt; f"The comedian is {comedian['name']}, aged {comedian['age']}."
 The comedian is Tom, aged 30.
</code></pre>

blocks|key|600730|text|如果您使用的是Python+3，则还可以利用f字符串|type|unstyled|depth|inlineStyleRanges|entityRanges|data|600731|myname+=+"Test"
sample_string+=+"Hi+my+name+is+{name}".format(name=myname)|code-block|syntax|javascript|600732|至|600733|sample_string+=+f"Hi+my+name+is+{myname}"|600734|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|N|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

If you are using Python 3, than you can also leverage, f-strings

<pre><code>myname = "Test"
sample_string = "Hi my name is {name}".format(name=myname)
</code></pre>

to 

<pre><code>sample_string = f"Hi my name is {myname}"
</code></pre>

I'm trying to maintain/update/rewrite/fix a bit of Python that looks a bit like this:

<pre><code>variable = """My name is %s and it has been %s since I was born.
 My parents decided to call me %s because they thought %s was a nice name.
 %s is the same as %s.""" % (name, name, name, name, name, name)
</code></pre>

There are little snippets that look like this all over the script, and I was wondering whether there's a simpler (more Pythonic?) way to write this code. I've found one instance of this that replaces the same variable about 30 times, and it just feels ugly.

Is the only way around the (in my opinion) ugliness to split it up into lots of little bits?

<pre><code>variable = """My name is %s and it has been %s since I was born.""" % (name, name)
variable += """My parents decided to call me %s because they thought %s was a nice name.""" % (name, name)
variable += """%s is the same as %s.""" % (name, name)
</code></pre>

Output formatting in Python: replacing several %s with the same variable

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

文章

问答

视频

学习中心

腾讯云实验室

直播

竞赛

腾讯云架构师技术同盟交流圈

腾讯云数据库专区

腾讯云顾问专区

腾讯云原生专区

腾讯混元专区

腾讯云TCE专区

腾讯云Lighthouse专区

腾讯云HAI专区

腾讯云Edgeone专区

腾讯云存储专区

腾讯云智能专区

腾讯轻联专区 

腾讯云开发专区

TAPD专区

腾讯轻量云游戏服专区

腾讯云最具价值专家

腾讯云架构师技术同盟

腾讯云创作之星

腾讯云开发者先锋 

腾讯云代码助手

CODING DevOps

Cloud Studio

SDK中心

API中心

命令行工具

我正在尝试维护/更新/重写/修复一些看起来有点像这样的Python：variable = """My name is %s and it has been %s since I was born.              My parents decided to call me %s because they th...

问Python中的输出格式设置:用同一变量替换多个%s
EN

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问Python中的输出格式设置:用同一变量替换多个%sEN

社区

活动

圈层

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问Python中的输出格式设置:用同一变量替换多个%s
EN