docs: def sqla_datatype_for(datum):
      """
      Given a scalar Python value, picks an appropriate SQLAlchemy data type.
  
      >>> sqla_datatype_for(7.2)
      DECIMAL(precision=2, scale=1)
      >>> sqla_datatype_for("Jan 17 2012")
      <class 'sqlalchemy.sql.sqltypes.DATETIME'>
      >>> sqla_datatype_for("something else")
      Unicode(length=14)
      """
      try:
          if len(_complex_enough_to_be_date.findall(datum)) > 1:
              dateutil.parser.parse(datum)
              return sa.DATETIME
      except (TypeError, ValueError):
          pass
      try:
          (prec, scale) = precision_and_scale(datum)
          return sa.DECIMAL(prec, scale)
      except TypeError:
          return sa.Unicode(len(datum))