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You can either convert a Decimal object to a string: cursor = db.cursor() cursor.execute("""select * from table""") output = [] for row in cursor: output.append(str(row[4])) Or to a float: cursor = db.cursor() cursor.execute("""select * from table""") output = [] for row in cursor: output.append(float(row[4]))
class SqliteDecimal(TypeDecorator): # This TypeDecorator use Sqlalchemy Integer as impl. It converts Decimals # from Python to Integers which is later stored in Sqlite database.
25 Νοε 2008 · Can someone suggest a good way to convert from float to Decimal [...] perhaps limiting number of significant digits that can be supported? Short answer / solution: Yes. def ftod(val, prec = 15): return Decimal(val).quantize(Decimal(10)**-prec)
When creating new models you can actually pass normal (float) numbers, Pydantic will automatically convert them to Decimal types, and SQLModel will store them as Decimal types in the database (using SQLAlchemy).
13 Φεβ 2022 · A type for fixed precision numbers, such as NUMERIC or DECIMAL. This type returns Python decimal.Decimal objects by default, unless the :paramref:`.Numeric.asdecimal` flag is set to False, in which case they are coerced to Python float objects.
13 Φεβ 2022 · Return a conversion function for processing literal values that are to be rendered directly without using binds. Method: result _processor: Return a conversion function for processing result row values. Class Variable _default _decimal _return _scale: Undocumented: Instance Variable: asdecimal: Undocumented: Instance Variable: decimal _return ...
13 Φεβ 2022 · To use decimal numbers in python you need to import the decimal module and create your decimals with decimal.Decimal. >>> import decimal. >>> decimal.Decimal(2) * decimal.Decimal("0.75") Decimal('1.50')
