BUG: Error tokenizing data. C error: Expected 1 fields in line 3, saw 2 #58216
Description
Pandas version checks
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I have checked that this issue has not already been reported.
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I have confirmed this bug exists on the latest version of pandas.
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I have confirmed this bug exists on the main branch of pandas.
Reproducible Example
import pandas as pd
pos_surface_untreated=pd.read_table('POSCAR-surface',header=None,sep='\\s+')Issue Description
When I write my input file POSCAR-surface as:
surf111_2x2
1.00000000000000
1.0000 2.0000
,the code will warning me with "Error tokenizing data. C error: Expected 1 fields in line 3, saw 2". But if I changes my input file POSCAR-surface as
surf111_2x2
1.00000000000000
1.0000
, the code will run successfully.
Expected Behavior
I hope this code can give me a Dataframe as this
0 1
0 surf111_2x2 NaN
1 1.00000000000000 NaN
2 1.0000 2.0000
Installed Versions
INSTALLED VERSIONS
commit : bdc79c1
python : 3.12.3.final.0
python-bits : 64
OS : Windows
OS-release : 11
Version : 10.0.22621
machine : AMD64
processor : AMD64 Family 23 Model 96 Stepping 1, AuthenticAMD
byteorder : little
LC_ALL : None
LANG : None
LOCALE : Chinese (Simplified)_China.936
pandas : 2.2.1
numpy : 1.26.4
pytz : 2024.1
dateutil : 2.9.0.post0
setuptools : 69.2.0
pip : 24.0
Cython : None
pytest : None
hypothesis : None
sphinx : None
blosc : None
feather : None
xlsxwriter : None
lxml.etree : None
html5lib : None
pymysql : None
psycopg2 : None
jinja2 : None
IPython : None
pandas_datareader : None
adbc-driver-postgresql: None
adbc-driver-sqlite : None
bs4 : None
bottleneck : None
dataframe-api-compat : None
fastparquet : None
fsspec : None
gcsfs : None
matplotlib : None
numba : None
numexpr : None
odfpy : None
openpyxl : None
pandas_gbq : None
pyarrow : None
pyreadstat : None
python-calamine : None
pyxlsb : None
s3fs : None
scipy : None
sqlalchemy : None
tables : None
tabulate : None
xarray : None
xlrd : None
zstandard : None
tzdata : 2024.1
qtpy : None
pyqt5 : None