Error6 reports
Fix NotImplementedError
in Pandas
✅ Solution
The "NotImplementedError" in pandas arises when an operation is called on an object or data type for which that specific operation hasn't been defined. To resolve this, identify the specific method or operation causing the error (e.g., `__eq__`, `__truediv__`) and either implement the missing functionality for the relevant pandas object/data type, cast the data to a compatible type before the operation, or use a different pandas function that achieves the desired result.
Related Issues
Real GitHub issues where developers encountered this error:
BUG: `NotImplementedError: eq not implemented for <class 'range'>` when comparing `columns` and `range` in pandas 3.0.0rc0 with pyarrowDec 19, 2025
BUG: regresssion in 3.0rc: cannot save df with MultiIndex to HDFDec 18, 2025
BUG: Inconsistency between `Series[bool].__truediv__(list[bool])` and `Series[bool].truediv(list[bool])`Dec 2, 2025
BUG: when np.datetime64[ns] is a type in a MultiIndex, "NotImplementedError" when trying to return the df from a joblib.delayedNov 11, 2025
CI: Pyodide checks failing with NotImplemented errorOct 24, 2025
Timeline
First reported:Oct 11, 2025
Last reported:Dec 19, 2025