Don't test xml examples on py3.7

Author: pgleeson

.github/workflows/ci.yml

@@ -47,21 +47,28 @@ jobs:
       run: |
         pip list
 
-    - name: Run some examples
+    - name: Run simple examples
       run: |
         cd examples
         python document.py
 
         cd test
         python test.py
 
-        ## Test NeuroML example
+    - name: Test NeuroML examples
+      if: ${{ matrix.python-version != '3.7'}}
 
-        cd ../neuroml2
+        cd examples/neuroml2
         python neuroml2_spec.py
 
         # Note: NeuroML files will be validated with OMV below
 
+    - name: Test SBML examples
+      if: ${{ matrix.python-version != '3.7'}}
+
+        cd examples/sbml
+        ./regenerateAndTest.sh
+
     - name: Run pytest
       run: |
         pytest tests

examples/test/test.py

@@ -3,10 +3,11 @@
 from modelspec.base_types import Base
 from modelspec.utils import load_json
 from typing import List
+from typing import Any
+import sys
 
-# Example testing multiple options...
 
-from typing import Any
+# Example testing multiple options...
 
 
 def convert2float(x: Any) -> float:
@@ -83,7 +84,9 @@ class TopClass(Base):
 
 tc.to_yaml_file("test_instance.yaml")
 tc.to_json_file("test_instance.json")
-tc.to_xml_file("test_instance.xml")
+
+if sys.version_info >= (3, 8):
+    tc.to_xml_file("test_instance.xml")
 
 str_b4 = str(tc)