Jython reports $py.class files in the trace function, so adapt to find the source file.

1 files changed, 5 insertions, 0 deletions

diff --git a/coverage/control.py b/coverage/control.py
index 28c8850f..cdaf9721 100644
--- a/coverage/control.py
+++ b/coverage/control.py
@@ -231,6 +231,11 @@ class coverage(object):
         dunder_file = frame.f_globals.get('__file__')
         if dunder_file:
             filename = self._source_for_file(dunder_file)
+
+        # Jython reports the .class file to the tracer, use the source file.
+        if filename.endswith("$py.class"):
+            filename = filename[:-9] + ".py"
+
         canonical = self.file_locator.canonical_filename(filename)
 
         # If the user specified source, then that's authoritative about what to