read_csv throws wrong exception on permissions issue

[omri374]

Code Sample, a copy-pastable example if possible

# Your code here
train_df = pd.read_csv("../input/train.csv")

Problem description

When trying to open a CSV with no permissions on ubuntu 16.04, pandas returns this error:
OSError: Initializing from file failed

see this SO thread: https://stackoverflow.com/questions/50552404/oserror-initializing-from-file-failed-on-csv-in-pandas for an example.

Expected Output

Expected exception or details of exception should specify that this is a permission error, e.g. PermissionError and not OSError.

Output of pd.show_versions()

[paste the output of pd.show_versions() here below this line]

INSTALLED VERSIONS

commit: None
python: 3.6.7.final.0
python-bits: 64
OS: Linux
OS-release: 4.15.0-39-generic
machine: x86_64
processor: x86_64
byteorder: little
LC_ALL: None
LANG: en_US.UTF-8
LOCALE: en_US.UTF-8

pandas: 0.23.4
pytest: None
pip: 18.1
setuptools: 40.5.0
Cython: None
numpy: 1.15.4
scipy: 1.1.0
pyarrow: None
xarray: None
IPython: 7.1.1
sphinx: None
patsy: None
dateutil: 2.7.5
pytz: 2018.7
blosc: None
bottleneck: None
tables: None
numexpr: None
feather: None
matplotlib: None
openpyxl: None
xlrd: None
xlwt: None
xlsxwriter: None
lxml: None
bs4: None
html5lib: None
sqlalchemy: None
pymysql: None
psycopg2: None
jinja2: None
s3fs: None
fastparquet: None
pandas_gbq: None
pandas_datareader: None

[TomAugspurger]

What error does the standard library throw when you do open(path) on a file you don't have permissions on?

[omri374]

open("../test/train.csv")

---

> PermissionError                           Traceback (most recent call last)
> <ipython-input-2-51df98a2583a> in <module>
> ----> 1 open("../test/train.csv")
> 
> PermissionError: [Errno 13] Permission denied: '../test/train.csv'

import pandas
pandas.read_csv("../test/train.csv")

> ---------------------------------------------------------------------------
> OSError                                   Traceback (most recent call last)
> <ipython-input-5-9d81e9f38383> in <module>
>       1 import pandas
> ----> 2 pandas.read_csv("../test/train.csv")
> 
> ~/anaconda3/envs/tf/lib/python3.6/site-packages/pandas/io/parsers.py in parser_f(filepath_or_buffer, sep, delimiter, header, names, index_col, usecols, squeeze, prefix, mangle_dupe_cols, dtype, engine, converters, true_values, false_values, skipinitialspace, skiprows, nrows, na_values, keep_default_na, na_filter, verbose, skip_blank_lines, parse_dates, infer_datetime_format, keep_date_col, date_parser, dayfirst, iterator, chunksize, compression, thousands, decimal, lineterminator, quotechar, quoting, escapechar, comment, encoding, dialect, tupleize_cols, error_bad_lines, warn_bad_lines, skipfooter, doublequote, delim_whitespace, low_memory, memory_map, float_precision)
>     676                     skip_blank_lines=skip_blank_lines)
>     677 
> --> 678         return _read(filepath_or_buffer, kwds)
>     679 
>     680     parser_f.__name__ = name
> 
> ~/anaconda3/envs/tf/lib/python3.6/site-packages/pandas/io/parsers.py in _read(filepath_or_buffer, kwds)
>     438 
>     439     # Create the parser.
> --> 440     parser = TextFileReader(filepath_or_buffer, **kwds)
>     441 
>     442     if chunksize or iterator:
> 
> ~/anaconda3/envs/tf/lib/python3.6/site-packages/pandas/io/parsers.py in __init__(self, f, engine, **kwds)
>     785             self.options['has_index_names'] = kwds['has_index_names']
>     786 
> --> 787         self._make_engine(self.engine)
>     788 
>     789     def close(self):
> 
> ~/anaconda3/envs/tf/lib/python3.6/site-packages/pandas/io/parsers.py in _make_engine(self, engine)
>    1012     def _make_engine(self, engine='c'):
>    1013         if engine == 'c':
> -> 1014             self._engine = CParserWrapper(self.f, **self.options)
>    1015         else:
>    1016             if engine == 'python':
> 
> ~/anaconda3/envs/tf/lib/python3.6/site-packages/pandas/io/parsers.py in __init__(self, src, **kwds)
>    1706         kwds['usecols'] = self.usecols
>    1707 
> -> 1708         self._reader = parsers.TextReader(src, **kwds)
>    1709 
>    1710         passed_names = self.names is None
> 
> pandas/_libs/parsers.pyx in pandas._libs.parsers.TextReader.__cinit__()
> 
> pandas/_libs/parsers.pyx in pandas._libs.parsers.TextReader._setup_parser_source()
> 
> OSError: Initializing from file failed

[TomAugspurger]

Thanks. Are you interested in investigating how we should raise the same error?

[roberthdevries]

Take