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-rw-r--r--coverage/execfile.py4
1 files changed, 3 insertions, 1 deletions
diff --git a/coverage/execfile.py b/coverage/execfile.py
index 1845f8d7..844c11bc 100644
--- a/coverage/execfile.py
+++ b/coverage/execfile.py
@@ -10,10 +10,12 @@ import types
from coverage.backward import BUILTINS
from coverage.backward import PYC_MAGIC_NUMBER, imp, importlib_util_find_spec
-from coverage.misc import ExceptionDuringRun, NoCode, NoSource
+from coverage.misc import ExceptionDuringRun, NoCode, NoSource, isolate_module
from coverage.phystokens import compile_unicode
from coverage.python import get_python_source
+os = isolate_module(os)
+
class DummyLoader(object):
"""A shim for the pep302 __loader__, emulating pkgutil.ImpLoader.