python data_error ai_generated true

pandas.errors.ParserError: Error tokenizing data. C error: Expected 5 fields in line 12, saw 7

ID: python/pandas-csv-parser-error

Also available as: JSON · Markdown · 中文
80%Fix Rate
87%Confidence
0Evidence
2024-07-09First Seen

Version Compatibility

VersionStatusIntroducedDeprecatedNotes
3.x active — — —

Root Cause

CSV rows have inconsistent field counts, often from unquoted commas or embedded newlines.

generic

中文

CSV 各行字段数不一致，常因未转义的逗号或内嵌换行。

Workarounds

  1. 85% success 
    pd.read_csv(path, engine='python', on_bad_lines='warn')
  2. 90% success 
    pd.read_csv(path, quoting=csv.QUOTE_MINIMAL, escapechar='\\')

Dead Ends

Common approaches that don't work:

  1. 70% fail

    Silently drops data; root issue persists

  2. 85% fail

    Already comma; delimiter not the issue