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-rw-r--r--scripts/qapi/common.py5
1 files changed, 3 insertions, 2 deletions
diff --git a/scripts/qapi/common.py b/scripts/qapi/common.py
index 5abab44..9d5c05f 100644
--- a/scripts/qapi/common.py
+++ b/scripts/qapi/common.py
@@ -391,8 +391,9 @@ class QAPIDoc(object):
class QAPISchemaParser(object):
- def __init__(self, fname, previously_included=[], incl_info=None):
- previously_included.append(os.path.abspath(fname))
+ def __init__(self, fname, previously_included=None, incl_info=None):
+ previously_included = previously_included or set()
+ previously_included.add(os.path.abspath(fname))
try:
if sys.version_info[0] >= 3: