Improve error message for DataFrame.append() · Issue #30871 · pandas-dev/pandas (original) (raw)

Code Sample, a copy-pastable example if possible

import pandas as pd

pd.version '0.26.0.dev0+1731.g3ddd495e4'

df = pd.DataFrame({"Name": ["Alice"], "Gender": ["F"]}) df Name Gender 0 Alice F

df.append({"Name": "Bob", "Gender": "M"}) Traceback (most recent call last): File "", line 1, in File "C:\Users\simon\pandas\pandas\core\frame.py", line 7013, in append "Can only append a Series if ignore_index=True " TypeError: Can only append a Series if ignore_index=True or if the Series has a name

Problem description

dict-like is valid type for other parameter of DataFrame.append

Expected Output

ValueError: Can only append a dict-like if ignore_index=True

Output of pd.show_versions()

[paste the output of pd.show_versions() here below this line]