text: from datetime import datetime
  
  from click import ParamType
  
  
  class Datetime(ParamType):
      name = 'date'
  
      def __init__(self, format: str):
          self.format = format
  
      def convert(self, value, param, ctx):
          if value is None or isinstance(value, datetime):
              return value
  
          try:
              return datetime.strptime(value, self.format)
          except ValueError as e:
              self.fail(
                  'Could not parse datetime string "{datetime_str}" formatted as {format} ({ex})'.format(
                      datetime_str=value,
                      format=self.format,
                      ex=e,
                  ),
                  param,
                  ctx,
              )
  