sequential, threaded & async HTTP clients using HTTPX

20-futures/getflags/tree.py

@@ -0,0 +1,38 @@
+import httpx
+
+def tree(cls, level=0):
+    yield cls.__name__, level
+    for sub_cls in cls.__subclasses__():
+        yield from tree(sub_cls, level+1)
+
+
+def display(cls):
+    for cls_name, level in tree(cls):
+        indent = ' ' * 4 * level
+        print(f'{indent}{cls_name}')
+
+
+def find_roots(module):
+    exceptions = []
+    for name in dir(module):
+        obj = getattr(module, name)
+        if isinstance(obj, type) and issubclass(obj, BaseException):
+            exceptions.append(obj)
+    roots = []
+    for exc in exceptions:
+        root = True
+        for other in exceptions:
+            if exc is not other and issubclass(exc, other):
+                root = False
+                break
+        if root:
+            roots.append(exc)
+    return roots
+
+
+def main():
+    for exc in find_roots(httpx):
+        display(exc)
+
+if __name__ == '__main__':
+    main()