output isoform if avaiable as subject

bin/README.md

@@ -12,5 +12,6 @@ poetry run validate produce -m ../go-site/metadata --gpad -t . -o go-basic.json
 
 To test whether a GAF file is valid (passes all the GORules):
 ```bash
+poetry install
 poetry run python3 ontobio-parse-assocs.py --file [path_to_file.gaf] --format GAF -o mgi_valid.gaf --report-md mgi.report.md -r [path_to_go.json] -l all validate
 ```

ontobio/model/association.py

@@ -644,6 +644,14 @@ def to_gpad_2_0_tsv(self) -> List:
         """
 
         props_list = ["{key}={value}".format(key=key, value=value) for key, value in self.properties]
+        gp_isoforms = None
+        print("before conversion", self.subject.id)
+        if self.subject_extensions:
+            gp_isoforms = self.subject_extensions[0].term
+        if gp_isoforms:
+            self.subject.id = gp_isoforms
+            print("after conversion", self.subject.id)
+
         return [
             str(self.subject.id),
             "NOT" if self.negated else "",