Merge pull request #2302 from shcheklein/fix-2259

url info: fix infinite recustion on deepcopy

dvc/path_info.py

@@ -184,6 +184,12 @@ class URLInfo(object):
     __truediv__ = __div__
 
     def __getattr__(self, name):
+        # When deepcopy is called, it creates and object without __init__,
+        # self.parsed is not initialized and it causes infinite recursion.
+        # More on this special casing here:
+        # https://stackoverflow.com/a/47300262/298182
+        if name.startswith("__"):
+            raise AttributeError(name)
         return getattr(self.parsed, name)
 
     @cached_property

tests/unit/test_path_info.py

@@ -1,4 +1,5 @@
 import pytest
+import copy
 
 from dvc.path_info import URLInfo, CloudURLInfo
 
@@ -34,3 +35,10 @@ def test_url_info_parents(cls):
         cls("ssh://[email protected]/test1"),
         cls("ssh://[email protected]/"),
     ]
+
+
+@pytest.mark.parametrize("cls", [URLInfo, CloudURLInfo])
+def test_url_info_deepcopy(cls):
+    u1 = cls("ssh://[email protected]:/test1/test2/test3")
+    u2 = copy.deepcopy(u1)
+    assert u1 == u2