File "pandas/core/indexes/base.py", line 1233, in __repr__
data = self._format_data()
File "pandas/core/indexes/base.py", line 1275, in _format_data
return format_object_summary(
File "pandas/io/formats/printing.py", line 448, in format_object_summary
summary, line = _extend_line(summary, line, tail[-1], display_width - 2, space2)
File "pandas/io/formats/printing.py", line 360, in _extend_line
if adj.len(line.rstrip()) + adj.len(value.rstrip()) >= display_width:
AttributeError: 'tuple' object has no attribute 'rstrip'