BUG: ParserError while reading a csv file generated by pandas dataframe #37620
Description
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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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Note: Please read this guide detailing how to provide the necessary information for us to reproduce your bug.
Code Sample, a copy-pastable example
temp.parquet(Please rename the file to temp.parquet, attached by renaming to zip file) :temp.parquet.zip
In[68]: import pandas as pd
In[69]: df = pd.read_parquet('temp.parquet')
In[70]: df
Out[70]:
0 1 2 ... 26 27 28
0 <NA> <NA> <NA> ... 2028304185033190912 <NA> <NA>
1 <NA> True <NA> ... <NA> <NA> <NA>
2 <NA> True 5054 ... <NA> <NA> <NA>
3 <NA> <NA> -31346 ... -4248617305981604864 <NA> 3122060888
4 <NA> True <NA> ... -7541642907968846848 <NA> 747124512
.. ... ... ... ... ... ... ...
813 <NA> True <NA> ... <NA> <NA> 62110627
814 <NA> False -14583 ... <NA> <NA> <NA>
815 <NA> <NA> <NA> ... <NA> <NA> 3767148217
816 <NA> False 1403 ... <NA> <NA> 1941864748
817 <NA> True <NA> ... <NA> <NA> 3137914998
[818 rows x 29 columns]
In[71]: df.to_csv('temp.csv')
In[72]: pd.read_csv('temp.csv')
Traceback (most recent call last):
File "/home/pgali/anaconda3/envs/cudf_dev/lib/python3.7/site-packages/IPython/core/interactiveshell.py", line 3417, in run_code
exec(code_obj, self.user_global_ns, self.user_ns)
File "<ipython-input-72-7315a31c9d2d>", line 1, in <module>
pd.read_csv('temp.csv')
File "/home/pgali/anaconda3/envs/cudf_dev/lib/python3.7/site-packages/pandas/io/parsers.py", line 686, in read_csv
return _read(filepath_or_buffer, kwds)
File "/home/pgali/anaconda3/envs/cudf_dev/lib/python3.7/site-packages/pandas/io/parsers.py", line 458, in _read
data = parser.read(nrows)
File "/home/pgali/anaconda3/envs/cudf_dev/lib/python3.7/site-packages/pandas/io/parsers.py", line 1196, in read
ret = self._engine.read(nrows)
File "/home/pgali/anaconda3/envs/cudf_dev/lib/python3.7/site-packages/pandas/io/parsers.py", line 2155, in read
data = self._reader.read(nrows)
File "pandas/_libs/parsers.pyx", line 847, in pandas._libs.parsers.TextReader.read
File "pandas/_libs/parsers.pyx", line 862, in pandas._libs.parsers.TextReader._read_low_memory
File "pandas/_libs/parsers.pyx", line 918, in pandas._libs.parsers.TextReader._read_rows
File "pandas/_libs/parsers.pyx", line 905, in pandas._libs.parsers.TextReader._tokenize_rows
File "pandas/_libs/parsers.pyx", line 2042, in pandas._libs.parsers.raise_parser_error
pandas.errors.ParserError: Error tokenizing data. C error: Buffer overflow caught - possible malformed input file.Problem description
The parse error occurs when we try to read the csv file generated by pandas dataframe. This error occurs to this specific dataframe. Not sure what the reason is. Hence attaching the dataframe in parquet file.
Expected Output
Output of pd.show_versions()
INSTALLED VERSIONS
commit : db08276
python : 3.7.8.final.0
python-bits : 64
OS : Linux
OS-release : 5.4.0-52-generic
Version : #57-Ubuntu SMP Thu Oct 15 10:57:00 UTC 2020
machine : x86_64
processor : x86_64
byteorder : little
LC_ALL : None
LANG : en_US.UTF-8
LOCALE : en_US.UTF-8
pandas : 1.1.3
numpy : 1.19.2
pytz : 2020.1
dateutil : 2.8.1
pip : 20.2.4
setuptools : 49.6.0.post20201009
Cython : 0.29.21
pytest : 6.1.1
hypothesis : 5.37.3
sphinx : 3.2.1
blosc : None
feather : None
xlsxwriter : None
lxml.etree : None
html5lib : None
pymysql : None
psycopg2 : None
jinja2 : 2.11.2
IPython : 7.18.1
pandas_datareader: None
bs4 : None
bottleneck : None
fsspec : 0.8.4
fastparquet : None
gcsfs : None
matplotlib : None
numexpr : None
odfpy : None
openpyxl : None
pandas_gbq : None
pyarrow : 1.0.1
pytables : None
pyxlsb : None
s3fs : None
scipy : None
sqlalchemy : None
tables : None
tabulate : None
xarray : None
xlrd : None
xlwt : None
numba : 0.51.2
Cross referencing to cudf fuzz test thread for tracking: rapidsai/cudf#6001