Sharan I had similar issue of reading different column sized csv file... Instead of using pandas I used csv reader which handles with no error... Regards Venkat
On Fri, 9 Nov 2018, 8:28 pm Sharan Basappa, <sharan.basa...@gmail.com> wrote: > are there any requirements about the format of the CSV file when using > read_csv from pandas? > For example, is it necessary that the csv file has to have same number of > columns in every line etc. > > I am trying to load a csv file and I get the following error. > I really don't know what the issue is ... > Any help is appreciated ... > > ParserErrorTraceback (most recent call last) > D:\Projects\Initiatives\machine learning\programs\log\log_analysis_1.py in > <module>() > 10 > 11 #data_df = pd.read_csv("BGL_MERGED.log", nrows=100, header=None, > delimiter=r'\s"') > ---> 12 data_df = pd.read_csv("d:\Projects\Initiatives\machine > learning\programs\log\BGL_MERGED.log", nrows=100, header=None) > 13 logger.debug("data frame %s \n", data_df) > 14 print('Cols %d' %(len(data_df.columns))) > D:\Users\sharanb\AppData\Local\Enthought\Canopy\edm\envs\User\lib\site-packages\pandas\io\parsers.pyc > 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, skip_footer, doublequote, > delim_whitespace, as_recarray, compact_ints, use_unsigned, low_memory, > buffer_lines, memory_map, float_precision) > 653 skip_blank_lines=skip_blank_lines) > 654 > --> 655 return _read(filepath_or_buffer, kwds) > 656 > 657 parser_f.__name__ = name > D:\Users\sharanb\AppData\Local\Enthought\Canopy\edm\envs\User\lib\site-packages\pandas\io\parsers.pyc > in _read(filepath_or_buffer, kwds) > 409 > 410 try: > --> 411 data = parser.read(nrows) > 412 finally: > 413 parser.close() > D:\Users\sharanb\AppData\Local\Enthought\Canopy\edm\envs\User\lib\site-packages\pandas\io\parsers.pyc > in read(self, nrows) > 1003 raise ValueError('skipfooter not supported for > iteration') > 1004 > -> 1005 ret = self._engine.read(nrows) > 1006 > 1007 if self.options.get('as_recarray'): > D:\Users\sharanb\AppData\Local\Enthought\Canopy\edm\envs\User\lib\site-packages\pandas\io\parsers.pyc > in read(self, nrows) > 1746 def read(self, nrows=None): > 1747 try: > -> 1748 data = self._reader.read(nrows) > 1749 except StopIteration: > 1750 if self._first_chunk: > pandas/_libs/parsers.pyx in pandas._libs.parsers.TextReader.read > (pandas\_libs\parsers.c:10862)() > pandas/_libs/parsers.pyx in > pandas._libs.parsers.TextReader._read_low_memory > (pandas\_libs\parsers.c:11343)() > pandas/_libs/parsers.pyx in pandas._libs.parsers.TextReader._read_rows > (pandas\_libs\parsers.c:11884)() > pandas/_libs/parsers.pyx in pandas._libs.parsers.TextReader._tokenize_rows > (pandas\_libs\parsers.c:11755)() > pandas/_libs/parsers.pyx in pandas._libs.parsers.raise_parser_error > (pandas\_libs\parsers.c:28765)() > ParserError: Error tokenizing data. C error: Expected 1 fields in line 8, > saw 3 > -- > https://mail.python.org/mailman/listinfo/python-list > -- https://mail.python.org/mailman/listinfo/python-list