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-rw-r--r--bin/tools/parse_version.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/bin/tools/parse_version.py b/bin/tools/parse_version.py
index 3253ebd5e83..46236aa6080 100644
--- a/bin/tools/parse_version.py
+++ b/bin/tools/parse_version.py
@@ -71,7 +71,7 @@ def parse_version(s):
contain them.
"""
parts = []
- for part in _parse_version_parts(s.lower()):
+ for part in _parse_version_parts((s or '0.1').lower()):
if part.startswith('*'):
if part<'*final': # remove '-' before a prerelease tag
while parts and parts[-1]=='*final-': parts.pop()