Commit 99c98e9c authored by Grant Likely's avatar Grant Likely Committed by Vincent Stehlé
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Speed up yaml output by using CDumper

The libyaml implementation is significantly faster than the pure python
YAML parser. If it is present, then use CDumper when dumping the

Signed-off-by: Grant Likely's avatarGrant Likely <>
[Rebased, added conditional.]
Signed-off-by: Vincent Stehlé's avatarVincent Stehlé <>
parent 5c89ff4b
......@@ -13,6 +13,12 @@ try:
except ImportError:
print('No yaml...')
if 'yaml' in sys.modules:
from yaml import CDumper as Dumper
except ImportError:
from yaml import Dumper
#based loosley on
# returns a filtered dict of dicts that meet some Key-value pair.
......@@ -343,7 +349,7 @@ def gen_yaml(cross_check, filename):
logging.debug(f'Generate {filename}')
with open(filename, 'w') as yamlfile:
yaml.dump(cross_check, yamlfile)
yaml.dump(cross_check, yamlfile, Dumper=Dumper)
# Combine or two databases db1 and db2 coming from ekl and seq files
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