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-rw-r--r--coverage/control.py8
1 files changed, 5 insertions, 3 deletions
diff --git a/coverage/control.py b/coverage/control.py
index a3287ae6..e4f5fae7 100644
--- a/coverage/control.py
+++ b/coverage/control.py
@@ -139,9 +139,11 @@ class coverage(object):
should not.
"""
- if filename == '<string>':
- # There's no point in ever tracing string executions, we can't do
- # anything with the data later anyway.
+ if filename[0] == '<':
+ # Lots of non-file execution is represented with artificial
+ # filenames like "<string>", "<doctest readme.txt[0]>", or
+ # "<exec_function>". Don't ever trace these executions, since we
+ # can't do anything with the data later anyway.
return False
# Compiled Python files have two filenames: frame.f_code.co_filename is