'In python To get specified month & date for example: dec-18,19,20 jan-3,4,5

i have DataFrame as above.

Expected output dec-18,19,20 jan-3,4,5

python pandas

Solution 1:^[1]

df.groupby('month').agg({'date': lambda x: ",".join(set(x))})

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Solution	Source
Solution 1	Mohammad Ayoub