Series.append raises TypeError with tuple of Series #28410
Description
mypy error:
pandas\core\series.py:2733:25: error: Unsupported operand types for + ("List[Any]" and "Tuple[Any, ...]") pandas\core\series.py:2733:25: note: Right operand is of type "Union[List[Any], Tuple[Any, ...]]" Code Sample, a copy-pastable example if possible
>>> import pandas as pd >>> pd.__version__ '0.25.0+332.g261c3a667' >>> >>> ser = pd.Series([1,2,3]) >>> >>> ser 0 1 1 2 2 3 dtype: int64 >>> >>> ser.append(ser) 0 1 1 2 2 3 0 1 1 2 2 3 dtype: int64 >>> >>> ser.append([ser,ser]) 0 1 1 2 2 3 0 1 1 2 2 3 0 1 1 2 2 3 dtype: int64 >>> >>> ser.append((ser,ser)) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "C:\Users\simon\OneDrive\code\pandas-simonjayhawkins\pandas\core\series.py", line 2733, in append to_concat = [self] + to_append TypeError: can only concatenate list (not "tuple") to listProblem description
The docstring for Series.append states to_append : Series or list/tuple of Series. Appending a tuple of Series raises TypeError: can only concatenate list (not "tuple") to list