WFS service: get_schema fails if <complexType> has no attribute "name"

[ameier3]

Some WFS servers to not define a name attribute in the <complexType> tag. in the response of DescribeFeatureType. In addition, the <element> has no type attribute then.

Example URLs:

• https://geodienste.hamburg.de/HH_WFS_Sportstaetten
• https://geodienste.hamburg.de/HH_WFS_Verkehr_opendata

These services provided by a Deegree WFS server.

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Code to test an reproduce:

import requests
from owslib.wfs import WebFeatureService

version = '2.0.0'
url = "https://geodienste.hamburg.de/HH_WFS_Sportstaetten"

wfs = WebFeatureService(url=url, version=version)

# Get all available layers
layers = list(wfs.contents)


# print the response of `DescribeFeatureType`
layer=layers[0]
params=dict(service='WFS', version=version, request='DescribeFeatureType',
      typeName=layer)

r = requests.get(url, params=params)
print(r.text)

xml_str = r.text

Retrieving the schema fails:

wfs.get_schema(layer)
Traceback (most recent call last):

  Input In [6] in <cell line: 1>
    wfs.get_schema(layer)

  File C:\miniconda3\envs\py38\lib\site-packages\owslib\feature\__init__.py:380 in get_schema
    return get_schema(self.url, typename, self.version, auth=self.auth)

  File C:\miniconda3\envs\py38\lib\site-packages\owslib\feature\schema.py:57 in get_schema
    complex_type = type_element.attrib["type"].split(":")[1]

  File src/lxml/etree.pyx:2494 in lxml.etree._Attrib.__getitem__

KeyError: 'type'