Python熊貓問題：read_html和python3-lxml安裝

Question

我試圖運行下面的代碼，無濟於事。據我所知，沒有任何語法錯誤。

import quandl 
import pandas as pd 

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

我收到以下錯誤，當我運行此代碼：太

Traceback (most recent call last):

File "C:/Users/Dave/Documents/Python Files/helloworld.py", line 15, in fiddy_states = pd.read_html(' http://simple.wikipedia.org/wiki/List_of_U.S._states ')

File "C:\Python35\lib\site-packages\pandas\io\html.py", line 874, in read_html parse_dates, tupleize_cols, thousands, attrs, encoding)

File "C:\Python35\lib\site-packages\pandas\io\html.py", line 726, in _parse parser = _parser_dispatch(flav)

File "C:\Python35\lib\site-packages\pandas\io\html.py", line 685, in _parser_dispatch raise ImportError("lxml not found, please install it")

ImportError: lxml not found, please install it

不知道這是爲什麼發生的，因爲我（應該）已經要求所有的包來運行該代碼。安裝lxml和python3-lxml時遇到問題，因爲軟件包無法安裝。作爲備份，我已經安裝了以下內容：

python-dev libxml2-dev libxslt1-dev zlib1g-dev

除了「html5lib」，這是我讀過一個合適的替代限於lxml

。

由於搜索類似的更正（即安裝lxml）不適用於我（我無法通過命令行上的pip以任何格式安裝lxml），因此無法確定此時該做什麼。

任何幫助，非常感謝。

編輯：看起來lxml從未安裝在我的電腦上。這很奇怪，因爲我無法通過pip install lxml進行安裝。我這裏還有錯誤日誌嘗試，當我得到一個安裝：

Collecting lxml 
    Using cached lxml-3.6.4.tar.gz 
Building wheels for collected packages: lxml 
    Running setup.py bdist_wheel for lxml ... error 
    Complete output from command c:\python35\python.exe -u -c "import setuptools, 
tokenize;__file__='C:\\Users\\Dwang\\AppData\\Local\\Temp\\pip-build-738bf61u\\l 
xml\\setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().rep 
lace('\r\n', '\n'), __file__, 'exec'))" bdist_wheel -d C:\Users\Dwang\AppData\Lo 
cal\Temp\tmpm9z4yol6pip-wheel- --python-tag cp35: 
    Building lxml version 3.6.4. 
    Building without Cython. 
    ERROR: b"'xslt-config' is not recognized as an internal or external command,\r 
\noperable program or batch file.\r\n" 
    ** make sure the development packages of libxml2 and libxslt are installed ** 

    Using build configuration of libxslt 
    running bdist_wheel 
    running build 
    running build_py 
    creating build 
    creating build\lib.win-amd64-3.5 
    creating build\lib.win-amd64-3.5\lxml 
    copying src\lxml\builder.py -> build\lib.win-amd64-3.5\lxml 
    copying src\lxml\cssselect.py -> build\lib.win-amd64-3.5\lxml 
    copying src\lxml\doctestcompare.py -> build\lib.win-amd64-3.5\lxml 
    copying src\lxml\ElementInclude.py -> build\lib.win-amd64-3.5\lxml 
    copying src\lxml\pyclasslookup.py -> build\lib.win-amd64-3.5\lxml 
    copying src\lxml\sax.py -> build\lib.win-amd64-3.5\lxml 
    copying src\lxml\usedoctest.py -> build\lib.win-amd64-3.5\lxml 
    copying src\lxml\_elementpath.py -> build\lib.win-amd64-3.5\lxml 
    copying src\lxml\__init__.py -> build\lib.win-amd64-3.5\lxml 
    creating build\lib.win-amd64-3.5\lxml\includes 
    copying src\lxml\includes\__init__.py -> build\lib.win-amd64-3.5\lxml\includes 

    creating build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\builder.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\clean.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\defs.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\diff.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\ElementSoup.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\formfill.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\html5parser.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\soupparser.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\usedoctest.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\_diffcommand.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\_html5builder.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\_setmixin.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\__init__.py -> build\lib.win-amd64-3.5\lxml\html 
    creating build\lib.win-amd64-3.5\lxml\isoschematron 
    copying src\lxml\isoschematron\__init__.py -> build\lib.win-amd64-3.5\lxml\iso 
schematron 
    copying src\lxml\lxml.etree.h -> build\lib.win-amd64-3.5\lxml 
    copying src\lxml\lxml.etree_api.h -> build\lib.win-amd64-3.5\lxml 
    copying src\lxml\includes\c14n.pxd -> build\lib.win-amd64-3.5\lxml\includes 
    copying src\lxml\includes\config.pxd -> build\lib.win-amd64-3.5\lxml\includes 
    copying src\lxml\includes\dtdvalid.pxd -> build\lib.win-amd64-3.5\lxml\include 
s 
    copying src\lxml\includes\etreepublic.pxd -> build\lib.win-amd64-3.5\lxml\incl 
udes 
    copying src\lxml\includes\htmlparser.pxd -> build\lib.win-amd64-3.5\lxml\inclu 
des 
    copying src\lxml\includes\relaxng.pxd -> build\lib.win-amd64-3.5\lxml\includes 

    copying src\lxml\includes\schematron.pxd -> build\lib.win-amd64-3.5\lxml\inclu 
des 
    copying src\lxml\includes\tree.pxd -> build\lib.win-amd64-3.5\lxml\includes 
    copying src\lxml\includes\uri.pxd -> build\lib.win-amd64-3.5\lxml\includes 
    copying src\lxml\includes\xinclude.pxd -> build\lib.win-amd64-3.5\lxml\include 
s 
    copying src\lxml\includes\xmlerror.pxd -> build\lib.win-amd64-3.5\lxml\include 
s 
    copying src\lxml\includes\xmlparser.pxd -> build\lib.win-amd64-3.5\lxml\includ 
es 
    copying src\lxml\includes\xmlschema.pxd -> build\lib.win-amd64-3.5\lxml\includ 
es 
    copying src\lxml\includes\xpath.pxd -> build\lib.win-amd64-3.5\lxml\includes 
    copying src\lxml\includes\xslt.pxd -> build\lib.win-amd64-3.5\lxml\includes 
    copying src\lxml\includes\etree_defs.h -> build\lib.win-amd64-3.5\lxml\include 
s 
    copying src\lxml\includes\lxml-version.h -> build\lib.win-amd64-3.5\lxml\inclu 
des 
    creating build\lib.win-amd64-3.5\lxml\isoschematron\resources 
    creating build\lib.win-amd64-3.5\lxml\isoschematron\resources\rng 
    copying src\lxml\isoschematron\resources\rng\iso-schematron.rng -> build\lib.w 
in-amd64-3.5\lxml\isoschematron\resources\rng 
    creating build\lib.win-amd64-3.5\lxml\isoschematron\resources\xsl 
    copying src\lxml\isoschematron\resources\xsl\RNG2Schtrn.xsl -> build\lib.win-a 
md64-3.5\lxml\isoschematron\resources\xsl 
    copying src\lxml\isoschematron\resources\xsl\XSD2Schtrn.xsl -> build\lib.win-a 
md64-3.5\lxml\isoschematron\resources\xsl 
    creating build\lib.win-amd64-3.5\lxml\isoschematron\resources\xsl\iso-schematr 
on-xslt1 
    copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_abstract 
_expand.xsl -> build\lib.win-amd64-3.5\lxml\isoschematron\resources\xsl\iso-sche 
matron-xslt1 
    copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_dsdl_inc 
lude.xsl -> build\lib.win-amd64-3.5\lxml\isoschematron\resources\xsl\iso-schemat 
ron-xslt1 
    copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_schematr 
on_message.xsl -> build\lib.win-amd64-3.5\lxml\isoschematron\resources\xsl\iso-s 
chematron-xslt1 
    copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_schematr 
on_skeleton_for_xslt1.xsl -> build\lib.win-amd64-3.5\lxml\isoschematron\resource 
s\xsl\iso-schematron-xslt1 
    copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_svrl_for 
_xslt1.xsl -> build\lib.win-amd64-3.5\lxml\isoschematron\resources\xsl\iso-schem 
atron-xslt1 
    copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\readme.txt - 
> build\lib.win-amd64-3.5\lxml\isoschematron\resources\xsl\iso-schematron-xslt1 
    running build_ext 
    building 'lxml.etree' extension 
    error: Unable to find vcvarsall.bat 

    ---------------------------------------- 
    Failed building wheel for lxml 
    Running setup.py clean for lxml 
Failed to build lxml 
Installing collected packages: lxml 
    Running setup.py install for lxml ... error 
    Complete output from command c:\python35\python.exe -u -c "import setuptools 
, tokenize;__file__='C:\\Users\\Dwang\\AppData\\Local\\Temp\\pip-build-738bf61u\ 
\lxml\\setup.py';exec(compile(getattr(tokenize, 'open', open)(__file__).read().r 
eplace('\r\n', '\n'), __file__, 'exec'))" install --record C:\Users\Dwang\AppDat 
a\Local\Temp\pip-4_tf2u3a-record\install-record.txt --single-version-externally- 
managed --compile: 
    Building lxml version 3.6.4. 
    Building without Cython. 
    ERROR: b"'xslt-config' is not recognized as an internal or external command, 
\r\noperable program or batch file.\r\n" 
    ** make sure the development packages of libxml2 and libxslt are installed * 
* 

    Using build configuration of libxslt 
    running install 
    running build 
    running build_py 
    creating build 
    creating build\lib.win-amd64-3.5 
    creating build\lib.win-amd64-3.5\lxml 
    copying src\lxml\builder.py -> build\lib.win-amd64-3.5\lxml 
    copying src\lxml\cssselect.py -> build\lib.win-amd64-3.5\lxml 
    copying src\lxml\doctestcompare.py -> build\lib.win-amd64-3.5\lxml 
    copying src\lxml\ElementInclude.py -> build\lib.win-amd64-3.5\lxml 
    copying src\lxml\pyclasslookup.py -> build\lib.win-amd64-3.5\lxml 
    copying src\lxml\sax.py -> build\lib.win-amd64-3.5\lxml 
    copying src\lxml\usedoctest.py -> build\lib.win-amd64-3.5\lxml 
    copying src\lxml\_elementpath.py -> build\lib.win-amd64-3.5\lxml 
    copying src\lxml\__init__.py -> build\lib.win-amd64-3.5\lxml 
    creating build\lib.win-amd64-3.5\lxml\includes 
    copying src\lxml\includes\__init__.py -> build\lib.win-amd64-3.5\lxml\includ 
es 
    creating build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\builder.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\clean.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\defs.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\diff.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\ElementSoup.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\formfill.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\html5parser.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\soupparser.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\usedoctest.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\_diffcommand.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\_html5builder.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\_setmixin.py -> build\lib.win-amd64-3.5\lxml\html 
    copying src\lxml\html\__init__.py -> build\lib.win-amd64-3.5\lxml\html 
    creating build\lib.win-amd64-3.5\lxml\isoschematron 
    copying src\lxml\isoschematron\__init__.py -> build\lib.win-amd64-3.5\lxml\i 
soschematron 
    copying src\lxml\lxml.etree.h -> build\lib.win-amd64-3.5\lxml 
    copying src\lxml\lxml.etree_api.h -> build\lib.win-amd64-3.5\lxml 
    copying src\lxml\includes\c14n.pxd -> build\lib.win-amd64-3.5\lxml\includes 
    copying src\lxml\includes\config.pxd -> build\lib.win-amd64-3.5\lxml\include 
s 
    copying src\lxml\includes\dtdvalid.pxd -> build\lib.win-amd64-3.5\lxml\inclu 
des 
    copying src\lxml\includes\etreepublic.pxd -> build\lib.win-amd64-3.5\lxml\in 
cludes 
    copying src\lxml\includes\htmlparser.pxd -> build\lib.win-amd64-3.5\lxml\inc 
ludes 
    copying src\lxml\includes\relaxng.pxd -> build\lib.win-amd64-3.5\lxml\includ 
es 
    copying src\lxml\includes\schematron.pxd -> build\lib.win-amd64-3.5\lxml\inc 
ludes 
    copying src\lxml\includes\tree.pxd -> build\lib.win-amd64-3.5\lxml\includes 
    copying src\lxml\includes\uri.pxd -> build\lib.win-amd64-3.5\lxml\includes 
    copying src\lxml\includes\xinclude.pxd -> build\lib.win-amd64-3.5\lxml\inclu 
des 
    copying src\lxml\includes\xmlerror.pxd -> build\lib.win-amd64-3.5\lxml\inclu 
des 
    copying src\lxml\includes\xmlparser.pxd -> build\lib.win-amd64-3.5\lxml\incl 
udes 
    copying src\lxml\includes\xmlschema.pxd -> build\lib.win-amd64-3.5\lxml\incl 
udes 
    copying src\lxml\includes\xpath.pxd -> build\lib.win-amd64-3.5\lxml\includes 

    copying src\lxml\includes\xslt.pxd -> build\lib.win-amd64-3.5\lxml\includes 
    copying src\lxml\includes\etree_defs.h -> build\lib.win-amd64-3.5\lxml\inclu 
des 
    copying src\lxml\includes\lxml-version.h -> build\lib.win-amd64-3.5\lxml\inc 
ludes 
    creating build\lib.win-amd64-3.5\lxml\isoschematron\resources 
    creating build\lib.win-amd64-3.5\lxml\isoschematron\resources\rng 
    copying src\lxml\isoschematron\resources\rng\iso-schematron.rng -> build\lib 
.win-amd64-3.5\lxml\isoschematron\resources\rng 
    creating build\lib.win-amd64-3.5\lxml\isoschematron\resources\xsl 
    copying src\lxml\isoschematron\resources\xsl\RNG2Schtrn.xsl -> build\lib.win 
-amd64-3.5\lxml\isoschematron\resources\xsl 
    copying src\lxml\isoschematron\resources\xsl\XSD2Schtrn.xsl -> build\lib.win 
-amd64-3.5\lxml\isoschematron\resources\xsl 
    creating build\lib.win-amd64-3.5\lxml\isoschematron\resources\xsl\iso-schema 
tron-xslt1 
    copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_abstra 
ct_expand.xsl -> build\lib.win-amd64-3.5\lxml\isoschematron\resources\xsl\iso-sc 
hematron-xslt1 
    copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_dsdl_i 
nclude.xsl -> build\lib.win-amd64-3.5\lxml\isoschematron\resources\xsl\iso-schem 
atron-xslt1 
    copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_schema 
tron_message.xsl -> build\lib.win-amd64-3.5\lxml\isoschematron\resources\xsl\iso 
-schematron-xslt1 
    copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_schema 
tron_skeleton_for_xslt1.xsl -> build\lib.win-amd64-3.5\lxml\isoschematron\resour 
ces\xsl\iso-schematron-xslt1 
    copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\iso_svrl_f 
or_xslt1.xsl -> build\lib.win-amd64-3.5\lxml\isoschematron\resources\xsl\iso-sch 
ematron-xslt1 
    copying src\lxml\isoschematron\resources\xsl\iso-schematron-xslt1\readme.txt 
-> build\lib.win-amd64-3.5\lxml\isoschematron\resources\xsl\iso-schematron-xslt 
1 
    running build_ext 
    building 'lxml.etree' extension 
    error: Unable to find vcvarsall.bat 

    ---------------------------------------- 
Command "c:\python35\python.exe -u -c "import setuptools, tokenize;__file__='C:\ 
\Users\\Dwang\\AppData\\Local\\Temp\\pip-build-738bf61u\\lxml\\setup.py';exec(co 
mpile(getattr(tokenize, 'open', open)(__file__).read().replace('\r\n', '\n'), __ 
file__, 'exec'))" install --record C:\Users\Dwang\AppData\Local\Temp\pip-4_tf2u3 
a-record\install-record.txt --single-version-externally-managed --compile" faile 
d with error code 1 in C:\Users\Dwang\AppData\Local\Temp\pip-build-738bf61u\lxml 
\ 

Answer 1

從我的理解，並根據docs，如果read_html()無法使用lxml，應該回落到html5lib，但看起來IKE它不會發生在你的情況下，並引發錯誤。

嘗試明確狀態flavor：

fifty_states = pd.read_html('https://simple.wikipedia.org/wiki/List_of_U.S._states', flavor='html5lib`)