Code: Select all
import pandas as pd
df = pd.DataFrame({"A": ["2025-07-24","2025-07-24","2025-07-24"], "B": ["2025-07-24","2025-07-24",pd.NA]}, dtype="datetime64[ns]")
df['values'] = [1,2,3]
a_df = df.groupby([df["A"].dt.month])["values"].count()
b_df = df.groupby([df["B"].dt.month])["values"].count()
print(a_df)
print(b_df)