In [2]: import pandas as pd In [3]: pd.__version__ Out[3]: '2.1.0' In [4]: import decimal In [6]: import numpy as np In [7]: pdf = pd.DataFrame( ...: { ...: "a": [1.2234242333234, 323432.3243423, np.nan], ...: "b": ["a", "b", "c"], ...: "c": pd.Series([34224, 324324, 324342], dtype="datetime64[ns]"), ...: "d": pd.Series([224.242, None, 2424.234324], dtype="category"), ...: "e": [ ...: decimal.Decimal("342.3243234234242"), ...: decimal.Decimal("89.32432497687622"), ...: None, ...: ], ...: } ...: ) In [8]: round(pdf, 2) Out[8]: a b c d e 0 1.22 a 1970-01-01 00:00:00.000034224 224.242000 342.3243234234242 1 323432.32 b 1970-01-01 00:00:00.000324324 NaN 89.32432497687622 2 NaN c 1970-01-01 00:00:00.000324342 2424.234324 None In [9]: round(pdf.a, 2) Out[9]: 0 1.22 1 323432.32 2 NaN Name: a, dtype: float64 In [10]: round(pdf.b, 2) Traceback (most recent call last): File "/Users/pgali/PycharmProjects/pythonProject/venv/lib/python3.10/site-packages/IPython/core/interactiveshell.py", line 3378, in run_code exec(code_obj, self.user_global_ns, self.user_ns) File "<ipython-input-10-9c75601ee514>", line 1, in <module> round(pdf.b, 2) File "/Users/pgali/PycharmProjects/pythonProject/venv/lib/python3.10/site-packages/pandas/core/generic.py", line 1663, in __round__ return self.round(decimals).__finalize__(self, method="__round__") File "/Users/pgali/PycharmProjects/pythonProject/venv/lib/python3.10/site-packages/pandas/core/series.py", line 2688, in round result = self._values.round(decimals) TypeError: can't multiply sequence by non-int of type 'float' In [11]: round(pdf.c, 2) Traceback (most recent call last): File "/Users/pgali/PycharmProjects/pythonProject/venv/lib/python3.10/site-packages/IPython/core/interactiveshell.py", line 3378, in run_code exec(code_obj, self.user_global_ns, self.user_ns) File "<ipython-input-11-6d1f4094de81>", line 1, in <module> round(pdf.c, 2) File "/Users/pgali/PycharmProjects/pythonProject/venv/lib/python3.10/site-packages/pandas/core/generic.py", line 1663, in __round__ return self.round(decimals).__finalize__(self, method="__round__") File "/Users/pgali/PycharmProjects/pythonProject/venv/lib/python3.10/site-packages/pandas/core/series.py", line 2688, in round result = self._values.round(decimals) File "/Users/pgali/PycharmProjects/pythonProject/venv/lib/python3.10/site-packages/pandas/core/arrays/datetimelike.py", line 2140, in round return self._round(freq, RoundTo.NEAREST_HALF_EVEN, ambiguous, nonexistent) File "/Users/pgali/PycharmProjects/pythonProject/venv/lib/python3.10/site-packages/pandas/core/arrays/datetimelike.py", line 2122, in _round offset = to_offset(freq) File "offsets.pyx", line 4460, in pandas._libs.tslibs.offsets.to_offset File "offsets.pyx", line 4562, in pandas._libs.tslibs.offsets.to_offset ValueError: Invalid frequency: 2 In [12]: round(pdf.d, 2) Traceback (most recent call last): File "/Users/pgali/PycharmProjects/pythonProject/venv/lib/python3.10/site-packages/IPython/core/interactiveshell.py", line 3378, in run_code exec(code_obj, self.user_global_ns, self.user_ns) File "<ipython-input-12-9fba030eaf35>", line 1, in <module> round(pdf.d, 2) File "/Users/pgali/PycharmProjects/pythonProject/venv/lib/python3.10/site-packages/pandas/core/generic.py", line 1663, in __round__ return self.round(decimals).__finalize__(self, method="__round__") File "/Users/pgali/PycharmProjects/pythonProject/venv/lib/python3.10/site-packages/pandas/core/series.py", line 2688, in round result = self._values.round(decimals) AttributeError: 'Categorical' object has no attribute 'round' In [13]: round(pdf.e, 2) Traceback (most recent call last): File "/Users/pgali/PycharmProjects/pythonProject/venv/lib/python3.10/site-packages/IPython/core/interactiveshell.py", line 3378, in run_code exec(code_obj, self.user_global_ns, self.user_ns) File "<ipython-input-13-d91def30b1e6>", line 1, in <module> round(pdf.e, 2) File "/Users/pgali/PycharmProjects/pythonProject/venv/lib/python3.10/site-packages/pandas/core/generic.py", line 1663, in __round__ return self.round(decimals).__finalize__(self, method="__round__") File "/Users/pgali/PycharmProjects/pythonProject/venv/lib/python3.10/site-packages/pandas/core/series.py", line 2688, in round result = self._values.round(decimals) TypeError: unsupported operand type(s) for *: 'decimal.Decimal' and 'float' In [4]: round(decimal.Decimal("23234.323224"), 2) Out[4]: Decimal('23234.32')