How to get all dates up to a certain date?

Question

I have a list of dates in python for example
dates = ["01/03/2010", "02/11/2010", "05/12/2010", "21/12/2010"]

in dd/mm/yyyy format. Then I have a cut-off date "30/11/2010", so I want all dates up to "30/11/2010" from dates, so the output would be
["01/03/2010", "02/11/2010"]

I have tried searching for similar questions but they all seem to be iterating through ranges of dates. Is there any way this can be done in Python?

sabik · Answer

If you're doing anything with the dates other than immediately printing them out again, you probably want to convert them to date objects.
import datetime as dt

dates = ["01/03/2010", "02/11/2010", "05/12/2010", "21/12/2010"]
parsed_dates = [dt.datetime.strptime(d, "%d/%m/%Y").date() for d in dates]
filtered_dates = [d for d in parsed_dates if d <= dt.date(2010, 11, 30)]
output_dates = [d.strftime("%d/%m/%Y") for d in filtered_dates]
print(", ".join(output_dates))

How to get all dates up to a certain date?

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