Correct 2.5-7 relative import formatting

uncompyle6/semantics/consts.py

@@ -476,8 +476,17 @@ TABLE_DIRECT = {
     "kv2": ("%c: %c", 1, 2),
     "import": ("%|import %c\n", 2),
     "importlist": ("%C", (0, maxint, ", ")),
-    "import_from": ("%|from %[2]{pattr} import %c\n", (3, "importlist")),
-    "import_from_star": ("%|from %[2]{pattr} import *\n",),
+
+    # Note: the below rule isn't really complete:
+    # n_import_from() smashes node[2].pattr
+    "import_from": (
+        "%|from %[2]{pattr} import %c\n",
+        (3, "importlist")
+     ),
+
+    "import_from_star": (
+        "%|from %[2]{pattr} import *\n",
+    ),
 }
 
 

uncompyle6/semantics/customize25.py

@@ -48,3 +48,9 @@ def customize_for_version25(self, version):
                 node[1][0][0][0].kind = 'tf_tryelsestmt'
         self.default(node)
     self.n_tryfinallystmt = tryfinallystmt
+
+    def n_import_from(node):
+        if node[0].pattr > 0:
+            node[2].pattr = ("." * node[0].pattr) + node[2].pattr
+        self.default(node)
+    self.n_import_from = n_import_from

uncompyle6/semantics/customize26_27.py

@@ -62,12 +62,7 @@ def customize_for_version26_27(self, version):
     self.n_call = n_call
 
     def n_import_from(node):
-        import_name = node[2]
-        if import_name == "IMPORT_NAME" and import_name.pattr == "":
-            fmt = "%|from . import %c\n"
-            self.template_engine(
-                (fmt, (3, "importlist")), node
-            )
-            self.prune()
+        if node[0].pattr > 0:
+            node[2].pattr = ("." * node[0].pattr) + node[2].pattr
         self.default(node)
     self.n_import_from = n_import_from