issue #477: set().union(a, b, ..) unsupported on Py2.4.

6 years ago · 19eafc5755
parent e460d648d5
commit 19eafc5755
1 changed files with 1 additions and 1 deletions
--- a/mitogen/master.py
+++ b/mitogen/master.py
@ -661,7 +661,7 @@ class ModuleFinder(object):
        while stack:
            name = stack.pop(0)
            names = self.find_related_imports(name)
-            stack.extend(set(names).difference(found, stack))
+            stack.extend(set(names).difference(set(found).union(stack)))
            found.update(names)
        found.discard(fullname)