xs:decimal maps to str if xs:pattern restriction is present

[leo-b]

Hi!

I have an external provided XSD-schema that contains a type definition like that:

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://wu.ac.at/myns" targetNamespace="http://wu.ac.at/myns" elementFormDefault="qualified" version="1.0">
	<xs:simpleType name="myType">
		<xs:restriction base="xs:decimal">
			<xs:whiteSpace value="collapse"/>
			<xs:fractionDigits value="1"/>
			<xs:totalDigits value="3"/>
			<xs:pattern value="^[0-9]{1,3}(|[,.][0-9]{1})$"/>
		</xs:restriction>
	</xs:simpleType>
	<xs:element name="myelem" type="myType"/>
</xs:schema>

Unfortunately the generated dataclass contains a value field of type str, not Decimal:

@dataclass
class Myelem:
    class Meta:
        name = "myelem"
        namespace = "http://wu.ac.at/myns"

    value: str = field(
        default="",
        metadata={
            "required": True,
            "total_digits": 3,
            "fraction_digits": 1,
            "white_space": "collapse",
            "pattern": r"^[0-9]{1,3}(|[,.][0-9]{1})$",
        }
    )

If I comment out the xs:pattern restriction, the field is generated as expected: as type Decimal.

I am not an xsd expert but for me it looks like xs:pattern should be allowed in this context:
https://www.oreilly.com/library/view/xml-schema/0596002521/re62.html

Cheers,
--leo

[leo-b]

I just found a related issue #720

--ignore-patterns solves my problem.

Sorry for the noise.
Cheers,
--leo