blocks|key|573845|text|(编辑:这个答案与Python2.x有关，而不是Python3.x)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|573846|目前，您正在使用默认编码将unicode字符串写入文件，这不支持表情符号(或者，就这一点而言，您可能真的想要大量字符)。您可以使用支持所有unicode字符的UTF-8编码来编写。|573847|与其执行file.write(+data+)，不如尝试file.write(+data.encode("utf-8")+)。|offset|length|style|CODE|573848|entityMap^0|0|0|4|I|R|Y|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|N|8|@$F|O|G|P|H|I]|$F|Q|G|R|H|I]]|9|@]|A|$]]|$1|J|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|K|$]]

(Edit: This answer relevant to Python 2.x, not Python 3.x)

Currently you're writing unicode strings to the file with the default encoding, which doesn't support emoji (or, for that matter, a ton of characters that you probably really do want). You can instead write using the UTF-8 encoding, which supports all unicode characters.

Instead of doing <code>file.write( data )</code>, try <code>file.write( data.encode("utf-8") )</code>.

blocks|key|573886|text|你有两个选择：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|573887|选择一个能够处理Emoji码点的编码。您已经打开了您的文件，以便使用默认的编解码器(这取决于您的系统)编写，或者选择不支持代码点的显式编码。
UTF编码可以很好地处理代码点；我在这里选择UTF-8：
以open(文件名，'w'，编码=‘utf8+8’)作为输出文件:outfile.write(您的数据)|ordered-list-item|573888|设置错误处理模式，以替换编解码器无法处理的代码点、转义序列或完全忽略它们。请参阅+function+errors参数：
错误是一个可选字符串，它指定如何处理编码和解码错误--这不能在二进制模式中使用。可以使用各种标准的错误处理程序，但是在codecs.register_error()中注册的任何错误处理名称也是有效的。标准名称是：|offset|length|style|CODE|573889|573890|573891|-+`'strict'`+to+raise+a+`ValueError`+exception+if+there+is+an+encoding+error.+The+default+value+of+`None`+has+the+same+effect.
-+`'ignore'`+ignores+errors.+Note+that+ignoring+encoding+errors+can+lead+to+data+loss.
-+`'replace'`+causes+a+replacement+marker+(such+as+`'?'`)+to+be+inserted+where+there+is+malformed+data.
-+`'surrogateescape'`+will+represent+any+incorrect+bytes+as+code+points+in+the+Unicode+Private+Use+Area+ranging+from+U%2BDC80+to+U%2BDCFF.+These+private+code+points+will+then+be+turned+back+into+the+same+bytes+when+the+`surrogateescape`+error+handler+is+used+when+writing+data.+This+is+useful+for+processing+files+in+an+unknown+encoding.
-+`'xmlcharrefreplace'`+is+only+supported+when+writing+to+a+file.+Characters+not+supported+by+the+encoding+are+replaced+with+the+appropriate+XML+character+reference+`&#nnn;`.
-+`'backslashreplace'`+(also+only+supported+when+writing)+replaces+unsupported+characters+with+Python’s+backslashed+escape+sequences.|code-block|syntax|javascript|573892|因此，使用errors='ignore'打开文件不会编写Emoji代码点，而不会引发错误：|573893|使用open(文件名，'w'，错误=‘忽略’)作为输出文件:outfile.write(您的数据)|573894|演示：|573895|>>>+a_ok+=+'The+U%2B1F44C+OK+HAND+SIGN+codepoint:+\U0001F44C'
>>>+print(a_ok)
The+U%2B1F44C+OK+HAND+SIGN+codepoint:+
>>>+a_ok.encode('utf8')
b'The+U%2B1F44C+OK+HAND+SIGN+codepoint:+\xf0\x9f\x91\x8c'
>>>+a_ok.encode('cp1251',+errors='ignore')
b'The+U%2B1F44C+OK+HAND+SIGN+codepoint:+'
>>>+a_ok.encode('cp1251',+errors='replace')
b'The+U%2B1F44C+OK+HAND+SIGN+codepoint:+?'
>>>+a_ok.encode('cp1251',+errors='xmlcharrefreplace')
b'The+U%2B1F44C+OK+HAND+SIGN+codepoint:+&#128076;'
>>>+a_ok.encode('cp1251',+errors='backslashreplace')
b'The+U%2B1F44C+OK+HAND+SIGN+codepoint:+\\U0001f44c'|573896|请注意，'surrogateescape'选项空间有限，实际上只对解码一个编码未知的文件非常有用；无论如何，它都不能处理Emoji。|573897|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.python.org/3/library/functions.html#open^0|0|0|1E|6|3B|N|14|9|0|0|0|0|0|5|F|0|0|0|0|4|H|0^^$0|@$1|2|3|4|5|6|7|19|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|1A|8|@]|9|@]|A|$]]|$1|E|3|F|5|D|7|1B|8|@$G|1C|H|1D|I|J]|$G|1E|H|1F|I|J]]|9|@$G|1G|H|1H|1|1I]]|A|$]]|$1|K|3|-4|5|6|7|1J|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]|$1|M|3|N|5|O|7|1L|8|@]|9|@]|A|$P|Q]]|$1|R|3|S|5|6|7|1M|8|@$G|1N|H|1O|I|J]]|9|@]|A|$]]|$1|T|3|U|5|6|7|1P|8|@]|9|@]|A|$]]|$1|V|3|W|5|6|7|1Q|8|@]|9|@]|A|$]]|$1|X|3|Y|5|O|7|1R|8|@]|9|@]|A|$P|Q]]|$1|Z|3|10|5|6|7|1S|8|@$G|1T|H|1U|I|J]]|9|@]|A|$]]|$1|11|3|-4|5|6|7|1V|8|@]|9|@]|A|$]]]|12|$13|$5|14|15|16|A|$17|18]]]]

You have two options:

<ol>
<li>Pick an encoding that can handle Emoji codepoints. You've opened your file for writing either with the default codec (which depends on your system), or picked an explicit encoding that doesn't support the codepoints.

A UTF encoding would be able to handle the codepoints just fine; I'd pick UTF-8 here:

<pre><code>with open(filename, 'w', encoding='utf8') as outfile:
 outfile.write(yourdata)
</code></pre></li>
<li>Set an error handling mode that either replaces codepoints your codec cannot handle with replacement characters, an escape sequence or ignores them altogether. See the <a href="https://docs.python.org/3/library/functions.html#open" rel="nofollow"><code>open()</code> function</a> <code>errors</code> argument:

<blockquote>
 errors is an optional string that specifies how encoding and decoding errors are to be handled–this cannot be used in binary mode. A variety of standard error handlers are available, though any error handling name that has been registered with <code>codecs.register_error()</code> is also valid. The standard names are:
 
 <ul>
 <li><code>'strict'</code> to raise a <code>ValueError</code> exception if there is an encoding error. The default value of <code>None</code> has the same effect.</li>
 <li><code>'ignore'</code> ignores errors. Note that ignoring encoding errors can lead to data loss.</li>
 <li><code>'replace'</code> causes a replacement marker (such as <code>'?'</code>) to be inserted where there is malformed data.</li>
 <li><code>'surrogateescape'</code> will represent any incorrect bytes as code points in the Unicode Private Use Area ranging from U+DC80 to U+DCFF. These private code points will then be turned back into the same bytes when the <code>surrogateescape</code> error handler is used when writing data. This is useful for processing files in an unknown encoding.</li>
 <li><code>'xmlcharrefreplace'</code> is only supported when writing to a file. Characters not supported by the encoding are replaced with the appropriate XML character reference <code>&amp;#nnn;</code>.</li>
 <li><code>'backslashreplace'</code> (also only supported when writing) replaces unsupported characters with Python’s backslashed escape sequences.</li>
 </ul>
</blockquote>

So opening the file with <code>errors='ignore'</code> will not write Emoji codepoints instead of raising an error:

<pre><code>with open(filename, 'w', errors='ignore') as outfile:
 outfile.write(yourdata)
</code></pre></li>
</ol>

Demo:

<pre><code>&gt;&gt;&gt; a_ok = 'The U+1F44C OK HAND SIGN codepoint: \U0001F44C'
&gt;&gt;&gt; print(a_ok)
The U+1F44C OK HAND SIGN codepoint: 
&gt;&gt;&gt; a_ok.encode('utf8')
b'The U+1F44C OK HAND SIGN codepoint: \xf0\x9f\x91\x8c'
&gt;&gt;&gt; a_ok.encode('cp1251', errors='ignore')
b'The U+1F44C OK HAND SIGN codepoint: '
&gt;&gt;&gt; a_ok.encode('cp1251', errors='replace')
b'The U+1F44C OK HAND SIGN codepoint: ?'
&gt;&gt;&gt; a_ok.encode('cp1251', errors='xmlcharrefreplace')
b'The U+1F44C OK HAND SIGN codepoint: &amp;#128076;'
&gt;&gt;&gt; a_ok.encode('cp1251', errors='backslashreplace')
b'The U+1F44C OK HAND SIGN codepoint: \\U0001f44c'
</code></pre>

Note that the <code>'surrogateescape'</code> option has limited space and is really only useful for decoding a file with unknown encoding as best you can; it cannot handle Emoji in any case.

I'm trying to parse through an XML file and write the contents to a plain text file. I have the program working so far up until it hits an emoji character, then Python throws the following error:

<pre><code>UnicodeEncodeError: 'charmap' codec can't encode characters in position 177-181: character maps to &lt;undefined&gt;
</code></pre>

I went to the error location and found the following emojis in the XML file:

<img src="https://i.imgur.com/Y1q7Nwu.png" alt="emoji">

My question is how do either encode them to unicode or remove/ignore them completely when writing to file.

It outputs perfectly when I print() to the console, but throws an error when writing to file.

I have searched Google and here, but the only answers I am getting is that they are already encoded to unicode. Mine as you can see are, literals? I'm not sure if I'm saying that correctly.

Also the XML file I'm working with has the following format:

<pre><code>&lt;?xml version='1.0' encoding='UTF-8' standalone='yes' ?&gt;
&lt;?xml-stylesheet type="text/xsl" href="sms.xsl"?&gt;
&lt;smses count="1"&gt;
 &lt;sms protocol="0" address="+00000000000" date="1346772606199" type="1" subject="null" body="Lorem ipsum dolor sit amet, consectetur adipisicing elit," toa="null" sc_toa="null" service_center="+00000000000" read="1" status="-1" locked="0" date_sent="1346772343000" readable_date="Sep 4, 2012 10:30:06 AM" contact_name="John Doe" /&gt;
&lt;/smses&gt;
</code></pre>

Python 3.4 - Remove or ignore emoji characters when writing to file

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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我试图解析XML文件并将内容写入纯文本文件。到目前为止，这个程序一直工作到一个表情符号字符，然后Python抛出以下错误：UnicodeEncodeError: 'charmap' codec can't encode characters in position 177-181: character maps to ...

问Python3.4-在写入文件时删除或忽略表情符号
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