blocks|key|2078975|text|我也犯了同样的错误，我的python3似乎指向了python2中的熊猫(因为我没有在python3中安装熊猫)。在做了pip3安装熊猫和重新启动笔记本之后，它工作得很好。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2078976|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I got same error, it seems that my python3 was pointing to pandas in python2 (since I have not install pandas in python3). After doing pip3 install pandas and restarting a notebook, it worked fine.

blocks|key|782039|text|可以转到“设置”>“项目解释器”>单击“%2B”图标|type|unstyled|depth|inlineStyleRanges|entityRanges|data|782040|从包列表中找到'lxml‘，然后单击下面的'Install’按钮。|782041|我使用的是PyCharm+2019.2.1+(社区版)|782042|Build+#PC-192.6262.63，建于2019年8月22日|782043|运行时版本:+11.0.3%2B12-b304.39+amd64|782044|VM:+OpenJDK+64位服务器VM由JetBrains+s.r.o提供|782045|Linux+4.15.0-58-泛型|782046|GC:+ParNew，ConcurrentMarkSweep|782047|内存:+937M|782048|核心:4|782049|entityMap^0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|W|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|X|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|Y|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|Z|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|10|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|11|8|@]|9|@]|A|$]]|$1|N|3|O|5|6|7|12|8|@]|9|@]|A|$]]|$1|P|3|Q|5|6|7|13|8|@]|9|@]|A|$]]|$1|R|3|S|5|6|7|14|8|@]|9|@]|A|$]]|$1|T|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|U|$]]

You can go to Settings > Project Interpreter > Click on '+' icon 
Find 'lxml' from the list of packages and click 'Install Package' button found below. 
I am using PyCharm 2019.2.1 (Community Edition) 
Build #PC-192.6262.63, built on August 22, 2019 
Runtime version: 11.0.3+12-b304.39 amd64 
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o 
Linux 4.15.0-58-generic 
GC: ParNew, ConcurrentMarkSweep 
Memory: 937M 
Cores: 4

blocks|key|2079024|text|您可能需要(重新)安装一些库pip+install+lxml+bs4+html5lib|type|ordered-list-item|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2079025|默认情况下，pd.read_html()使用'lxml‘库进行读取，因此请尝试安装在上面的另一个库，如pd.read_html(some_url,+flavor='html5lib')|2079026|unstyled|entityMap^0|E|T|0|6|E|1F|15|0^^$0|@$1|2|3|4|5|6|7|K|8|@$9|L|A|M|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|N|8|@$9|O|A|P|B|C]|$9|Q|A|R|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|I|7|S|8|@]|D|@]|E|$]]]|J|$]]

<ol>
<li>you may have to (re)install some of your libraries <code>pip install lxml bs4 html5lib</code>
</li>
<li><code>pd.read_html()</code> reads with 'lxml' library by default, so try another library that you installed above like <code>pd.read_html(some_url, flavor='html5lib')</code>
</li>
</ol>

blocks|key|782127|text|对于使用木星笔记本的人来说，我在pip+install+lxml之后重新启动内核，错误就消失了。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|CODE|entityRanges|data|782128|entityMap^0|F|P|G|G|0^^$0|@$1|2|3|4|5|6|7|I|8|@$9|J|A|K|B|C]|$9|L|A|M|B|D]]|E|@]|F|$]]|$1|G|3|-4|5|6|7|N|8|@]|E|@]|F|$]]]|H|$]]

For people reached here using Jupyter notebook, I restarted the kernel after <code>pip install lxml</code> and the error is gone.

blocks|key|2079059|text|我试图重新安装lxml，没有任何进展。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2079060|我结束了卸载熊猫，重新安装和更新，这解决了我的问题！|2079061|pip+uninstall+pandas++
pip+install+pandas
pip3+install+--upgrade+pandas|code-block|syntax|javascript|2079062|entityMap^0|7|4|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|R|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|S|8|@]|D|@]|E|$K|L]]|$1|M|3|-4|5|6|7|T|8|@]|D|@]|E|$]]]|N|$]]

I tried to reinstall <code>lxml</code> without any progress.
I ended uninstalling pandas and reinstalling and updating and that solved my issues!
<pre><code>pip uninstall pandas 
pip install pandas
pip3 install --upgrade pandas
</code></pre>

blocks|key|2079080|text|当我试图运行一些使用熊猫的代码时，我也遇到了同样的错误。我在这里尝试了一些建议，但这些都没有用。最后，对我有用的是以下两个步骤：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2079081|conda+update+anaconda
conda+install+spyder=5.0.5|code-block|syntax|javascript|2079082|现在，当我重新启动Spyder并运行我的代码时，它运行得很好。|2079083|我刚刚安装并开始使用Anaconda，所以我不知道这个问题的根本原因，但我的猜测是，在安装anaconda之前安装的包中似乎存在某种“交叉连接”，通过运行上述两个步骤，现在一切都在Anaconda环境中运行。|2079084|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]]|$1|G|3|H|5|6|7|O|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I got the same error when trying to run some code that was using pandas. I tried some suggestions here but those did not work. Finally, what worked for me was the following two steps :
<pre><code>conda update anaconda
conda install spyder=5.0.5
</code></pre>
Now when I restarted Spyder and ran my code it worked fine.
I have just installed and starting using anaconda so I don't know the root cause of this issue, but my guess is there seemed to be some &quot;cross-connection&quot; in the packages I had installed prior to my installation of Anaconda, and by running the above two steps now everything is running from within the Anaconda environment.

blocks|key|782210|text|未安装lxml时会发生此错误，因此只需转到终端并运行：pip3+install+lxml|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|782211|​|782212|📷|atomic|782213|782214|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://developer.qcloudimg.com/http-save/yehe-900000/6b95083159222ed3cca080dba45a5003.png|imageAlt^0|R|H|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|Y|8|@]|D|@$9|Z|A|10|1|11]]|E|$]]|$1|K|3|G|5|6|7|12|8|@]|D|@]|E|$]]|$1|L|3|-4|5|6|7|13|8|@]|D|@]|E|$]]]|M|$N|$5|O|P|Q|E|$R|S|T|-4]]]]

This error occurs when lxml is not installed, so just go to the terminal
and run: <code>pip3 install lxml</code>
<a href="https://i.stack.imgur.com/oobVg.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/oobVg.png" alt="Terminal Image" /></a>

blocks|key|2079139|text|我安装了lxml+4.9.1，但它没有工作。所以我试着安装lxml+4.8.0，它成功了！|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2079140|pip+install+lxml==4.8|code-block|syntax|javascript|2079141|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|$]]

I installed lxml 4.9.1, but it didn't work. So I tried to install lxml 4.8.0 instead, and it worked!
<pre class="lang-py prettyprint-override"><code>pip install lxml==4.8
</code></pre>

blocks|key|782290|text|我也有同样的问题。试图重新安装lxml不起作用。在重新阅读错误消息并跟踪错误~\Miniconda3\envs\mini_ds\lib\site-packages\pandas\io\html.py:872，之后，我想我发现问题在于~/_importers/io/html.py中的函数_importers()。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|782291|以下是功能：|782292|def+_importers()+->+None:
++++#+import+things+we+need
++++#+but+make+this+done+on+a+first+use+basis

++++global+_IMPORTS
++++if+_IMPORTS:
++++++++return

++++global+_HAS_BS4,+_HAS_LXML,+_HAS_HTML5LIB
++++bs4+=+import_optional_dependency("bs4",+errors="ignore")
++++_HAS_BS4+=+bs4+is+not+None

++++lxml+=+import_optional_dependency("lxml.etree",+errors="ignore")
++++_HAS_LXML+=+lxml+is+not+None

++++html5lib+=+import_optional_dependency("html5lib",+errors="ignore")
++++_HAS_HTML5LIB+=+html5lib+is+not+None

++++_IMPORTS+=+True|code-block|syntax|javascript|782293|您可以看到，对于lxml选项，它实际上尝试导入"lxml.etree“而不是"lxml”。因此，这可能是重新安装"lxml“没有帮助的原因。|782294|结论，我认为这可能是熊猫版本的一个问题(我的是1.4.1)。对我来说，一个快速的解决方案是在pd.read_html()中指定风味='html5lib‘。|782295|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

I got the same problem. Trying to reinstall lxml does not work. After rereading the error message and tracing the error ~\Miniconda3\envs\mini_ds\lib\site-packages\pandas\io\html.py:872, I think I found the problem lies in the function _importers() in ~/pandas/io/html.py.
Here is the function:
<pre><code>def _importers() -&gt; None:
 # import things we need
 # but make this done on a first use basis

 global _IMPORTS
 if _IMPORTS:
 return

 global _HAS_BS4, _HAS_LXML, _HAS_HTML5LIB
 bs4 = import_optional_dependency(&quot;bs4&quot;, errors=&quot;ignore&quot;)
 _HAS_BS4 = bs4 is not None

 lxml = import_optional_dependency(&quot;lxml.etree&quot;, errors=&quot;ignore&quot;)
 _HAS_LXML = lxml is not None

 html5lib = import_optional_dependency(&quot;html5lib&quot;, errors=&quot;ignore&quot;)
 _HAS_HTML5LIB = html5lib is not None

 _IMPORTS = True
</code></pre>
You can see that for lxml option, it actually tries importing &quot;lxml.etree&quot; instead of &quot;lxml&quot;. So this is probably why reinstalling &quot;lxml&quot; would not help.
Conclusion, I think this is perhaps a problem of pandas version (mine is 1.4.1). For me, a quick solution is to specify the flavor ='html5lib' in pd.read_html().

blocks|key|2118415|text|由于OP正在使用Anaconda，为了解决这个问题，通过打开正在运行的环境的lxml来安装CMD.Exe+Prompt，然后运行|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|2118416|conda+install+-c+anaconda+lxml|code-block|syntax|javascript|2118417|(来源)|2118418|我们也可以通过如下所示的版本来实现这一点|2118419|conda+install+-c+anaconda+lxml=4.8.0|2118420|备注：|BOLD|2118421|pip不像conda那样管理依赖关系，而且可能会破坏安装。因此，建议只在conda不能工作时才使用它。
pip安装lxml+#或pip安装lxml==4.9.1|unordered-list-item|2118422|如果您使用的是pip，并且已经安装了包，并且出现错误，则可以通过-I+(--ignore-installed)和-v，如下所示
pip安装-Iv+lxml==4.9.1|2118423|lxml官方文档可以在这里找到。|2118424|这是他们的官方GitHub回购。|2118425|entityMap|0|LINK|mutability|MUTABLE|url|https://anaconda.org/anaconda/lxml|1|https://lxml.de/installation.html|2|https://github.com/lxml/lxml^0|12|4|19|E|0|0|1|2|0|0|0|0|0|3|0|0|3|5|5|10|5|0|W|2|10|I|1K|2|0|0|4|8|7|1|0|0|F|2|0^^$0|@$1|2|3|4|5|6|7|1E|8|@$9|1F|A|1G|B|C]|$9|1H|A|1I|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|1J|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|1K|8|@]|D|@$9|1L|A|1M|1|1N]]|E|$]]|$1|M|3|N|5|6|7|1O|8|@]|D|@]|E|$]]|$1|O|3|P|5|H|7|1P|8|@]|D|@]|E|$I|J]]|$1|Q|3|R|5|6|7|1Q|8|@$9|1R|A|1S|B|S]]|D|@]|E|$]]|$1|T|3|U|5|V|7|1T|8|@$9|1U|A|1V|B|C]|$9|1W|A|1X|B|C]|$9|1Y|A|1Z|B|C]]|D|@]|E|$]]|$1|W|3|X|5|V|7|20|8|@$9|21|A|22|B|C]|$9|23|A|24|B|C]|$9|25|A|26|B|C]]|D|@]|E|$]]|$1|Y|3|Z|5|V|7|27|8|@$9|28|A|29|B|C]]|D|@$9|2A|A|2B|1|2C]]|E|$]]|$1|10|3|11|5|V|7|2D|8|@]|D|@$9|2E|A|2F|1|2G]]|E|$]]|$1|12|3|-4|5|6|7|2H|8|@]|D|@]|E|$]]]|13|$14|$5|15|16|17|E|$18|19]]|1A|$5|15|16|17|E|$18|1B]]|1C|$5|15|16|17|E|$18|1D]]]]

As OP is using Anaconda, in order to solve that issue, install <code>lxml</code> by opening the <code>CMD.Exe Prompt</code> for the environment one is working on, and run
<pre><code>conda install -c anaconda lxml
</code></pre>
(<a href="https://anaconda.org/anaconda/lxml" rel="nofollow noreferrer">Source</a>)
One can also do it by specifying the version as follows
<pre><code>conda install -c anaconda lxml=4.8.0
</code></pre>
Notes:
<ul>
<li><code>pip</code> doesn't manage dependencies the same way <code>conda</code> does and can, potentially, damage one's installation. Therefore, would recommend to use it only if <code>conda</code> doesn't work.
<pre><code>pip install lxml

# or

pip install lxml==4.9.1
</code></pre>
</li>
<li>If one is using pip and one has already the package installed and one is getting errors, one can pass <code>-I</code> (<code>--ignore-installed</code>) and <code>-v</code> as follows
<pre><code>pip install -Iv lxml==4.9.1
</code></pre>
</li>
<li><code>lxml</code> official documentation <a href="https://lxml.de/installation.html" rel="nofollow noreferrer">can be found here</a>.
</li>
<li><a href="https://github.com/lxml/lxml" rel="nofollow noreferrer">This is their official GitHub repo</a>.
</li>
</ul>

blocks|key|2079218|text|我在RPi上也看到了这个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2079219|Traceback+(most+recent+call+last):
++File+"<stdin>",+line+1,+in+<module>
++File+"/home/pi/python3-ml/lib/python3.7/site-packages/pandas/util/_decorators.py",+line+311,+in+wrapper
++++return+func(*args,+**kwargs)
++File+"/home/pi/python3-ml/lib/python3.7/site-packages/pandas/io/html.py",+line+1113,+in+read_html
++++displayed_only=displayed_only,
++File+"/home/pi/python3-ml/lib/python3.7/site-packages/pandas/io/html.py",+line+902,+in+_parse
++++parser+=+_parser_dispatch(flav)
++File+"/home/pi/python3-ml/lib/python3.7/site-packages/pandas/io/html.py",+line+859,+in+_parser_dispatch
++++raise+ImportError("lxml+not+found,+please+install+it")
ImportError:+lxml+not+found,+please+install+it|code-block|syntax|javascript|2079220|查看/home/pi/python3-ml/lib/python3.7/site-packages/pandas/io/html.py，它试图使用lxml.etree，所以我尝试使用该模块|2079221|>>>+from+lxml+import+etree
Traceback+(most+recent+call+last):
++File+"<stdin>",+line+1,+in+<module>
ImportError:+libxslt.so.1:+cannot+open+shared+object+file:+No+such+file+or+directory|2079222|我搜索了这个错误，发现需要在RPi上安装以下软件包|2079223|sudo+apt-get+install+libxslt|offset|length|style|CODE|2079224|安装后，我成功地使用了熊猫。|2079225|entityMap^0|0|0|0|0|0|0|S|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Y|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|Z|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|10|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|11|8|@$O|12|P|13|Q|R]]|9|@]|A|$]]|$1|S|3|T|5|6|7|14|8|@]|9|@]|A|$]]|$1|U|3|-4|5|6|7|15|8|@]|9|@]|A|$]]]|V|$]]

I was seeing this issue as well on my RPi.
<pre><code>Traceback (most recent call last):
 File &quot;&lt;stdin&gt;&quot;, line 1, in &lt;module&gt;
 File &quot;/home/pi/python3-ml/lib/python3.7/site-packages/pandas/util/_decorators.py&quot;, line 311, in wrapper
 return func(*args, **kwargs)
 File &quot;/home/pi/python3-ml/lib/python3.7/site-packages/pandas/io/html.py&quot;, line 1113, in read_html
 displayed_only=displayed_only,
 File &quot;/home/pi/python3-ml/lib/python3.7/site-packages/pandas/io/html.py&quot;, line 902, in _parse
 parser = _parser_dispatch(flav)
 File &quot;/home/pi/python3-ml/lib/python3.7/site-packages/pandas/io/html.py&quot;, line 859, in _parser_dispatch
 raise ImportError(&quot;lxml not found, please install it&quot;)
ImportError: lxml not found, please install it
</code></pre>
Looking into /home/pi/python3-ml/lib/python3.7/site-packages/pandas/io/html.py it was attempting to use lxml.etree, so I attempted to just use that module
<pre><code>&gt;&gt;&gt; from lxml import etree
Traceback (most recent call last):
 File &quot;&lt;stdin&gt;&quot;, line 1, in &lt;module&gt;
ImportError: libxslt.so.1: cannot open shared object file: No such file or directory
</code></pre>
I searched for that error and found that the following packages needed to be installed on the RPi
<code>sudo apt-get install libxslt</code>
After installing I was successfully able to use pandas

I have the following code (in PyCharm (MacOS)):

<pre><code>import pandas as pd

fiddy_states = pd.read_html('https://simple.wikipedia.org/wiki/List_of_U.S._states')

print(fiddy_states)
</code></pre>

And I get the following error:

<pre><code>/Library/Frameworks/Python.framework/Versions/3.6/bin/python3.6 /Users/user_name/PycharmProjects/PandasTest/Doc3.py
Traceback (most recent call last):
 File "/Users/user_name/PycharmProjects/PandasTest/Doc3.py", line 9, in &lt;module&gt;
 fiddy_states = pd.read_html('https://simple.wikipedia.org/wiki/List_of_U.S._states')
 File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pandas/io/html.py", line 906, in read_html
 keep_default_na=keep_default_na)
 File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pandas/io/html.py", line 733, in _parse
 parser = _parser_dispatch(flav)
 File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/pandas/io/html.py", line 693, in _parser_dispatch
 raise ImportError("lxml not found, please install it")
ImportError: lxml not found, please install it
</code></pre>

In Anaconda does appear installed the last version of <code>lxml</code> (<code>3.8.0</code>). Despite of that, I have tried to reinstall it by: 1) writing <code>pip install lxml</code> and 2) downloading the <code>lxml</code> wheel corresponding to my python version (<code>lxml-3.8.0-cp36-cp36m-win_amd64.whl</code>), but in any case all remains the same (in the second case I get that it is <code>not a supported wheel on this platform</code>, even though the version of python is correct (3.6, 64 bits)). 

I've read similar questions here (even with the same code above, since it's from a tutorial), but the problem still persists.

Python: ImportError: lxml not found, please install it

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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问ImportError: lxml找不到，请安装
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