Testing#
Assertion functions#
testing.assert_frame_equal(left, right[, ...])
Check that left and right DataFrame are equal.
testing.assert_series_equal(left, right[, ...])
Check that left and right Series are equal.
testing.assert_index_equal(left, right[, ...])
Check that left and right Index are equal.
testing.assert_extension_array_equal(left, right)
Check that left and right ExtensionArrays are equal.
Exceptions and warnings#
errors.AbstractMethodError(class_instance[, ...])
Raise this error instead of NotImplementedError for abstract methods.
errors.AttributeConflictWarning
Warning raised when index attributes conflict when using HDFStore.
errors.CategoricalConversionWarning
Warning is raised when reading a partial labeled Stata file using a iterator.
Warning raised when trying to set using chained assignment.
Exception is raised when trying to perform an operation on a closed HDFStore file.
Warning is raised when converting css styling fails.
Error is raised when executing sql with bad syntax or sql that throws an error.
Exceptionn raised when performing an operation on non-numerical data.
Warning raised when reading different dtypes in a column from a file.
Error raised when an operation would introduce duplicate labels.
Exception raised in pd.read_csv when empty data or header is encountered.
Warning raised when trying to use where criteria on an incompatible HDF5 file.
Exception is raised when trying to index and there is a mismatch in dimensions.
Warning raised by to_stata the column contains a non-valid stata name.
Exception is raised by _validate_comparison_value to indicate an invalid comparison.
Exception raised when attempting to use an invalid index key.
An invalid version was found, users should refer to PEP 440.
Exception raised when converting (astype) an array with NaN to an integer type.
Raised when trying to do a __setitem__ on an np.ndarray that is not lossless.
Exception raised when merging data.
Exception is raised in _get_data_buffer to signal that there is no requested buffer.
Exception raised when a freq cannot be null.
Error raised for unsupported Numba engine routines.
Exception raised when trying to use a built-in numexpr name as a variable name.
Exception raised for pandas.options.
Raised when the datetime is outside the range that can be represented.
Raised when encountering a timedelta value that cannot be represented.
Exception that is raised by an error encountered in parsing file contents.
Warning raised when reading a file that doesn't use the default 'c' parser.
Warning raised when there is a possible performance impact.
Exception raised when trying to open a HDFStore file when already opened.
Warning raised by to_stata on a column with a value outside or equal to int64.
Exception raised when clipboard functionality is unsupported.
errors.PyperclipWindowsException(message)
Exception raised when clipboard functionality is unsupported by Windows.
Exception raised when trying to set on a copied slice from a DataFrame.
Warning raised when trying to set on a copied slice from a DataFrame.
Exception raised by agg when the functions are ill-specified.
errors.UndefinedVariableError(name[, is_local])
Exception raised by query or eval when using an undefined variable name.
Error raised when slicing a MultiIndex which has not been lexsorted.
errors.UnsupportedFunctionCall
Exception raised when attempting to call a unsupported numpy function.
Warning raised by to_stata on a category column that contains non-string values.
Bug report function#
show_versions([as_json])
Provide useful information, important for bug reports.
Test suite runner#
test([extra_args, run_doctests])
Run the pandas test suite using pytest.