Description
Pandas version checks
-
I have checked that this issue has not already been reported.
-
I have confirmed this bug exists on the latest version of pandas.
-
I have confirmed this bug exists on the main branch of pandas.
Reproducible Example
import pandas as pd
html = '''<html>
<body>
<table>
<tr>
<td>a</td>
</tr>
</table>
<table>
<tr>
<td>a</td>
</tr>
</table>
</body>
</html>'''
for flavor in ('bs4', 'lxml'):
print(flavor, len(pd.read_html(html, flavor=flavor)))
# produces
# bs4 1
# lxml 2Issue Description
If two tables are the same, it looks like the bs4 parser de-duplicates if there is a duplicate table.
It doesn't look like an html5lib issue since running
soup = BeautifulSoup(html, 'html5lib')
len(soup.find_all('table')) # returns 2 as expectedThe lxml parser returns both tables.
Expected Behavior
number of dataframes should be consistent with both parsers (with valid html syntax)
Installed Versions
INSTALLED VERSIONS
commit : 005486f
python : 3.8.13.final.0
python-bits : 64
OS : Linux
OS-release : 4.19.128-microsoft-standard
Version : #1 SMP Tue Jun 23 12:58:10 UTC 2020
machine : x86_64
processor : x86_64
byteorder : little
LC_ALL : None
LANG : C.UTF-8
LOCALE : en_US.UTF-8
pandas : 1.5.0.dev0+2112.g005486fa6c.dirty
numpy : 1.23.5
pytz : 2022.2.1
dateutil : 2.8.2
setuptools : 65.4.0
pip : 22.2.2
Cython : 0.29.32
pytest : 7.1.3
hypothesis : 6.54.6
sphinx : 4.5.0
blosc : None
feather : None
xlsxwriter : 3.0.3
lxml.etree : 4.9.1
html5lib : 1.1
pymysql : 1.0.2
psycopg2 : 2.9.3
jinja2 : 3.0.3
IPython : 8.5.0
pandas_datareader: 0.10.0
bs4 : 4.11.1
bottleneck : 1.3.5
brotli :
fastparquet : 0.8.3
fsspec : 2021.11.0
gcsfs : 2021.11.0
matplotlib : 3.6.2
numba : 0.53.1
numexpr : 2.8.0
odfpy : None
openpyxl : 3.0.10
pandas_gbq : 0.15.0
pyarrow : 10.0.0
pyreadstat : 1.1.9
pyxlsb : 1.0.9
s3fs : 2021.11.0
scipy : 1.9.1
snappy :
sqlalchemy : 1.4.41
tables : 3.7.0
tabulate : 0.8.10
xarray : 2022.6.0
xlrd : 2.0.1
zstandard : 0.18.0
tzdata : None
qtpy : None
pyqt5 : None