[WIP] Debug (humanoid-path-planner#455)

* doc: debug

* doc: debug

* [doc/python] Set typename to empty string if type is None.

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: Louis Montaut <louismontaut@gmail.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

doc/python/doxygen_xml_parser.py

@@ -87,16 +87,18 @@
 
 
 def _templateParamToDict(param):
-    type = param.find("type")
+    type_ = param.find("type")
     declname = param.find("declname")
     defname = param.find("defname")
     # FIXME type may contain references in two ways:
     # - the real param type
     # - the name of the template argument is recognized as the name of a type...
     if defname is None and declname is None:
-        typetext = type.text
-        for c in type.iter():
-            if c == type:
+        typetext = type_.text
+        if typetext is None:
+            typetext = ""
+        for c in type_.iter():
+            if c == type_:
                 continue
             if c.text is not None:
                 typetext += c.text
@@ -111,10 +113,10 @@ def _templateParamToDict(param):
                 assert len(s) == 2
                 return {"type": s[0].strip(), "name": s[1].strip()}
         else:
-            return {"type": type.text, "name": ""}
+            return {"type": type_.text, "name": ""}
     else:
         assert defname.text == declname.text
-        return {"type": type.text, "name": defname.text}
+        return {"type": type_.text, "name": defname.text}
 
 
 def makeHeaderGuard(filename):