blocks|key|287519|text|有两种方法可以修复由最后一条print语句引起的问题。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|287520|您可以将@jamylak正确显示的str(c)调用的结果赋值给c，然后连接所有字符串，也可以简单地将最后一个print替换为：|287521|print+"a+%2B+b+as+integers:+",+c++#+note+the+comma+here|code-block|syntax|javascript|287522|在这种情况下|287523|str(c)|287524|不是必需的，可以删除。|287525|示例运行的输出：|287526|Enter+a:+3
Enter+b:+7
a+%2B+b+as+strings:++37
a+%2B+b+as+integers:++10|287527|通过以下方式：|287528|a+=+raw_input("Enter+a:+")
b+=+raw_input("Enter+b:+")
print+"a+%2B+b+as+strings:+"+%2B+a+%2B+b++#+%2B+everywhere+is+ok+since+all+are+strings
a+=+int(a)
b+=+int(b)
c+=+a+%2B+b
print+"a+%2B+b+as+integers:+",+c|287529|entityMap^0|E|5|0|H|6|V|1|1I|5|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|15|8|@$9|16|A|17|B|C]|$9|18|A|19|B|C]|$9|1A|A|1B|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|1C|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|1D|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|1E|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|1F|8|@]|D|@]|E|$]]|$1|S|3|T|5|6|7|1G|8|@]|D|@]|E|$]]|$1|U|3|V|5|J|7|1H|8|@]|D|@]|E|$K|L]]|$1|W|3|X|5|6|7|1I|8|@]|D|@]|E|$]]|$1|Y|3|Z|5|J|7|1J|8|@]|D|@]|E|$K|L]]|$1|10|3|-4|5|6|7|1K|8|@]|D|@]|E|$]]]|11|$]]

There are two ways to fix the problem which is caused by the last <code>print</code> statement. 

You can assign the result of the <code>str(c)</code> call to <code>c</code> as correctly shown by @jamylak and then concatenate all of the strings, or you can replace the last <code>print</code> simply with this:

<pre><code>print "a + b as integers: ", c # note the comma here
</code></pre>

in which case 

<pre><code>str(c)
</code></pre>

isn't necessary and can be deleted.

Output of sample run:

<pre><code>Enter a: 3
Enter b: 7
a + b as strings: 37
a + b as integers: 10
</code></pre>

with:

<pre><code>a = raw_input("Enter a: ")
b = raw_input("Enter b: ")
print "a + b as strings: " + a + b # + everywhere is ok since all are strings
a = int(a)
b = int(b)
c = a + b
print "a + b as integers: ", c
</code></pre>

blocks|key|287461|text|如果您想将int或float连接到一个字符串，则必须使用以下命令：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|287462|i+=+123
a+=+"foobar"
s+=+a+%2B+str(i)|code-block|syntax|javascript|287463|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

If you want to concatenate int or floats to a string you must use this:

<pre><code>i = 123
a = "foobar"
s = a + str(i)
</code></pre>

blocks|key|287586|text|c+=+a+%2B+b+
str(c)|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|287587|实际上，在这最后一行中，您并没有更改变量c的类型。|unstyled|287588|c_str=str(c)
print+"a+%2B+b+as+integers:+"+%2B+c_str|287589|应该能行得通。|287590|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|N|8|@]|9|@]|A|$]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$B|C]]|$1|I|3|J|5|F|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|F|7|Q|8|@]|9|@]|A|$]]]|L|$]]

<pre><code>c = a + b 
str(c)
</code></pre>

Actually, in this last line you are not changing the type of the variable c. If you do

<pre><code>c_str=str(c)
print "a + b as integers: " + c_str
</code></pre>

it should work.

blocks|key|504583|text|除了其他答案之外，还可以使用format()|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|504584|print("a+%2B+b+as+integers:+{}".format(c))|504585|例如：|504586|hours+=+13
minutes+=+32
print("Time+elapsed+-+{}+hours+and+{}+minutes".format(hours,+minutes))|code-block|syntax|javascript|504587|将导致输出-+Time+elapsed+-+13+hours+and+32+minutes|504588|有关更多信息，请查看docs。|504589|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.python.org/3/library/stdtypes.html#str.format^0|E|8|0|0|14|0|0|0|7|12|0|A|4|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@$9|11|A|12|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|13|8|@$9|14|A|15|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|16|8|@]|D|@]|E|$]]|$1|J|3|K|5|L|7|17|8|@]|D|@]|E|$M|N]]|$1|O|3|P|5|6|7|18|8|@$9|19|A|1A|B|C]]|D|@]|E|$]]|$1|Q|3|R|5|6|7|1B|8|@]|D|@$9|1C|A|1D|1|1E]]|E|$]]|$1|S|3|-4|5|6|7|1F|8|@]|D|@]|E|$]]]|T|$U|$5|V|W|X|E|$Y|Z]]]]

Apart from other answers, one could also use <code>format()</code>

<code>print("a + b as integers: {}".format(c))</code>

For example -

<pre><code>hours = 13
minutes = 32
print("Time elapsed - {} hours and {} minutes".format(hours, minutes))
</code></pre>

will result in output - <code>Time elapsed - 13 hours and 32 minutes</code>

Check out <a href="https://docs.python.org/3/library/stdtypes.html#str.format" rel="nofollow noreferrer">docs</a> for more information.

blocks|key|287818|text|您可以使用字符串函数将int转换为str：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|287819|user+=+"mohan"

line+=+str(50)

print(user+%2B+"typed"+%2B+line+%2B+"lines")|code-block|syntax|javascript|287820|entityMap^0|B|3|H|3|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|R|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|S|8|@]|D|@]|E|$]]]|L|$]]

You can convert <code>int</code> into <code>str</code> using string function:

<pre><code>user = "mohan"

line = str(50)

print(user + "typed" + line + "lines")
</code></pre>

blocks|key|287666|text|最简单、最不容易混淆的解决方案：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|287667|a+=+raw_input("Enter+a:+")
b+=+raw_input("Enter+b:+")
print+"a+%2B+b+as+strings:+%25s"+%25+a++%2B+b
a+=+int(a)
b+=+int(b)
c+=+a+%2B+b
print+"a+%2B+b+as+integers:+%25d"+%25+c|code-block|syntax|javascript|287668|我在http://freecodeszone.blogspot.com/上找到了这个|offset|length|287669|entityMap|0|LINK|mutability|MUTABLE|url|http://freecodeszone.blogspot.com/^0|0|0|2|Y|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

The easiest and least confusing solution:

<pre><code>a = raw_input("Enter a: ")
b = raw_input("Enter b: ")
print "a + b as strings: %s" % a + b
a = int(a)
b = int(b)
c = a + b
print "a + b as integers: %d" % c
</code></pre>

I found this on <a href="http://freecodeszone.blogspot.com/" rel="nofollow">http://freecodeszone.blogspot.com/</a>

blocks|key|504421|text|我还收到了错误消息"TypeError:无法连接'str‘和'int’对象“。事实证明，我只是在打印变量时忘记了在变量周围添加str()。下面是我的代码：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|504422|​|504423|def+main():
	rolling+=+True;+import+random
	while+rolling:
		roll+=+input("ENTER+=+roll;+Q+=+quit+")
		if+roll.lower()+!=+'q':
			num+=+(random.randint(1,6))
			print("----------------------");+print("you+rolled+"+%2B+str(num))
		else:
			rolling+=+False
main()|code-block|syntax|javascript|504424|504425|我知道，这是一个愚蠢的错误，但对于像我这样对python非常陌生的初学者来说，这是经常发生的。|504426|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|P|8|@]|9|@]|A|$G|H]]|$1|I|3|C|5|6|7|Q|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|R|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|M|$]]

I also had the error message "TypeError: cannot concatenate 'str' and 'int' objects". It turns out that I only just forgot to add str() around a variable when printing it. Here is my code:

<div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
<div class="snippet-code">
<pre class="snippet-code-js lang-js prettyprint-override"><code>def main():
	rolling = True; import random
	while rolling:
		roll = input("ENTER = roll; Q = quit ")
		if roll.lower() != 'q':
			num = (random.randint(1,6))
			print("----------------------"); print("you rolled " + str(num))
		else:
			rolling = False
main()</code></pre>
</div>
</div>


I know, it was a stupid mistake but for beginners who are very new to python such as myself, it happens.

I have this python program that adds strings to integers:

<pre><code>a = raw_input("Enter a: ")
b = raw_input("Enter b: ")
print "a + b as strings: " + a + b
a = int(a)
b = int(b)
c = a + b
str(c)
print "a + b as integers: " + c
</code></pre>

I get this error:

<pre><code>Python: TypeError: cannot concatenate 'str' and 'int' objects
</code></pre>

How can I add strings to integers?

Python: TypeError: cannot concatenate 'str' and 'int' objects

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。

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我有一个python程序，它可以将字符串添加到整数中：a = raw_input("Enter a: ")b = raw_input("Enter b: ")print "a + b as strings: " + a + ba = int(a)b = int(b)c = a + bstr(c)print "a + b as integers: " + c我得到了这个错误：Python: Type

问Python: TypeError:无法连接'str‘和'int’对象
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回答 7

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问Python: TypeError:无法连接'str‘和'int’对象EN

回答 7

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问Python: TypeError:无法连接'str‘和'int’对象
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