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How to create a Python object out of XSD with attributes

1

I am working on a project that is meant to take many different data sources and place them in a data table. To do this, we have a way to import the data through an XML document that has all of the fields defined in the table. A few of these fields are required. Fields that are required have a minimum occurrences value of a non-zero positive integer.

I have the XSD files for these XML documents. This isn't a 1 to 1 copy (since it's proprietary), but here is an example:

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified">
 <xs:element name="Widget">
 <xs:complexType>
 <xs:all>
 <xs:element name="GuyWhoMadeWidget" nillable="true" minOccurs="1">
 </xs:all>
 <xs:attribute name="version" type="xs:string"/>
 <xs:complexType>
 </xs:element>
 </xs:schema>

What I want to be able to do is go into the <xs: element> element and do logic in Python on whether or not minOccurs is a non-zero value. Here's some pseudocode:

file_object = open(xsd_file)
required_fields = []
xsd_python_object = parse_xsd_to_python(file_object)
for element in xsd_python_object:
 if element.minOccurs != 0:
 required_fields.append(element.name)
print(required_fields)

Sample output here would be:

Required fields for "Widget" table:
GuyWhoMadeWidget

I have been looking into the xmlschema and lxml packages but their facilities leave me wanting, confused, or both.

python xml oop

share|improve this question

asked Mar 6 at 21:33

nerdenatornerdenator

6421927

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Parse it using module-xml.etree.ElementTree
  
  – stovfl
  2 days ago
  

  
  
  
  

add a comment | 

1

I am working on a project that is meant to take many different data sources and place them in a data table. To do this, we have a way to import the data through an XML document that has all of the fields defined in the table. A few of these fields are required. Fields that are required have a minimum occurrences value of a non-zero positive integer.

I have the XSD files for these XML documents. This isn't a 1 to 1 copy (since it's proprietary), but here is an example:

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified">
 <xs:element name="Widget">
 <xs:complexType>
 <xs:all>
 <xs:element name="GuyWhoMadeWidget" nillable="true" minOccurs="1">
 </xs:all>
 <xs:attribute name="version" type="xs:string"/>
 <xs:complexType>
 </xs:element>
 </xs:schema>

What I want to be able to do is go into the <xs: element> element and do logic in Python on whether or not minOccurs is a non-zero value. Here's some pseudocode:

file_object = open(xsd_file)
required_fields = []
xsd_python_object = parse_xsd_to_python(file_object)
for element in xsd_python_object:
 if element.minOccurs != 0:
 required_fields.append(element.name)
print(required_fields)

Sample output here would be:

Required fields for "Widget" table:
GuyWhoMadeWidget

I have been looking into the xmlschema and lxml packages but their facilities leave me wanting, confused, or both.

python xml oop

share|improve this question

asked Mar 6 at 21:33

nerdenatornerdenator

6421927

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Parse it using module-xml.etree.ElementTree
  
  – stovfl
  2 days ago
  

  
  
  
  

add a comment | 

I am working on a project that is meant to take many different data sources and place them in a data table. To do this, we have a way to import the data through an XML document that has all of the fields defined in the table. A few of these fields are required. Fields that are required have a minimum occurrences value of a non-zero positive integer.

I have the XSD files for these XML documents. This isn't a 1 to 1 copy (since it's proprietary), but here is an example:

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified">
 <xs:element name="Widget">
 <xs:complexType>
 <xs:all>
 <xs:element name="GuyWhoMadeWidget" nillable="true" minOccurs="1">
 </xs:all>
 <xs:attribute name="version" type="xs:string"/>
 <xs:complexType>
 </xs:element>
 </xs:schema>

What I want to be able to do is go into the <xs: element> element and do logic in Python on whether or not minOccurs is a non-zero value. Here's some pseudocode:

file_object = open(xsd_file)
required_fields = []
xsd_python_object = parse_xsd_to_python(file_object)
for element in xsd_python_object:
 if element.minOccurs != 0:
 required_fields.append(element.name)
print(required_fields)

Sample output here would be:

Required fields for "Widget" table:
GuyWhoMadeWidget

I have been looking into the xmlschema and lxml packages but their facilities leave me wanting, confused, or both.

python xml oop

share|improve this question

asked Mar 6 at 21:33

nerdenatornerdenator

6421927

<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified">
 <xs:element name="Widget">
 <xs:complexType>
 <xs:all>
 <xs:element name="GuyWhoMadeWidget" nillable="true" minOccurs="1">
 </xs:all>
 <xs:attribute name="version" type="xs:string"/>
 <xs:complexType>
 </xs:element>
 </xs:schema>

file_object = open(xsd_file)
required_fields = []
xsd_python_object = parse_xsd_to_python(file_object)
for element in xsd_python_object:
 if element.minOccurs != 0:
 required_fields.append(element.name)
print(required_fields)

Required fields for "Widget" table:
GuyWhoMadeWidget

share|improve this question

asked Mar 6 at 21:33

nerdenatornerdenator

6421927

share|improve this question

asked Mar 6 at 21:33

nerdenatornerdenator

6421927

asked Mar 6 at 21:33

nerdenatornerdenator

6421927

asked Mar 6 at 21:33

nerdenatornerdenator

6421927