Generating a calendar week grid with the Python Calendar module#

I needed to generate a grid calendar that looks like this (design by Natalie Downe):

A calendar grid showing April with rows for each week, starting 28th March and finishing 1st May

The Python standard library calendar module has a utility function that really helps here:

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import calendar
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cal = calendar.Calendar()
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list(cal.monthdatescalendar(2022, 4))

Outputs:

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[[datetime.date(2022, 3, 28),
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  datetime.date(2022, 3, 29),
3
  datetime.date(2022, 3, 30),
4
  datetime.date(2022, 3, 31),
5
  datetime.date(2022, 4, 1),
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  datetime.date(2022, 4, 2),
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  datetime.date(2022, 4, 3)],
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 [datetime.date(2022, 4, 4),
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  datetime.date(2022, 4, 5),
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  datetime.date(2022, 4, 6),
11
  datetime.date(2022, 4, 7),
12
  datetime.date(2022, 4, 8),
13
  datetime.date(2022, 4, 9),
14
  datetime.date(2022, 4, 10)],
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 [datetime.date(2022, 4, 11),
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  datetime.date(2022, 4, 12),
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  datetime.date(2022, 4, 13),
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  datetime.date(2022, 4, 14),
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  datetime.date(2022, 4, 15),
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  datetime.date(2022, 4, 16),
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  datetime.date(2022, 4, 17)],
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 [datetime.date(2022, 4, 18),
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  datetime.date(2022, 4, 19),
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  datetime.date(2022, 4, 20),
25
  datetime.date(2022, 4, 21),
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  datetime.date(2022, 4, 22),
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  datetime.date(2022, 4, 23),
28
  datetime.date(2022, 4, 24)],
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 [datetime.date(2022, 4, 25),
30
  datetime.date(2022, 4, 26),
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  datetime.date(2022, 4, 27),
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  datetime.date(2022, 4, 28),
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  datetime.date(2022, 4, 29),
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  datetime.date(2022, 4, 30),
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  datetime.date(2022, 5, 1)]]