Django HTML date input

widgets.py

from django.forms.widgets import DateInput as DjangoDateInput
from django.utils.timezone import now

class DateInput(DjangoDateInput):
    """Custom select date widget."""

    input_type = "date"
    year_start = 2020
    offset_years = 5

    def __init__(self, attrs=None, *args, **kwargs):
        """Initialize widget."""
        attrs = attrs or {}
        attrs["min"] = date(self.year_start, 1, 1).strftime("%Y-%m-%d")
        attrs["max"] = date(now().year + self.offset_years, 12, 31).strftime(
            "%Y-%m-%d"
        )
        super().__init__(attrs, *args, **kwargs)