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Avoid errors in updateFallbackDirs.py when there are no fallbacks

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teor (Tim Wilson-Brown) 2016-06-22 11:04:54 +10:00
parent 6ce53668f4
commit 4090612246
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1 changed files with 10 additions and 2 deletions
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scripts/maint/updateFallbackDirs.py
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@ -1408,7 +1408,11 @@ class CandidateList(dict):
def calculate_measured_bandwidth(self):
self.sort_fallbacks_by_cw_to_bw_factor()
median_fallback = self.fallback_median(True)
median_cw_to_bw_factor = median_fallback.cw_to_bw_factor()
if median_fallback is not None:
median_cw_to_bw_factor = median_fallback.cw_to_bw_factor()
else:
# this will never be used, because there are no fallbacks
median_cw_to_bw_factor = None
for f in self.fallbacks:
f.set_measured_bandwidth(median_cw_to_bw_factor)
@ -1593,7 +1597,11 @@ class CandidateList(dict):
# return a string that describes a/b as a percentage
@staticmethod
def describe_percentage(a, b):
return '%d/%d = %.0f%%'%(a, b, (a*100.0)/b)
if b != 0:
return '%d/%d = %.0f%%'%(a, b, (a*100.0)/b)
else:
# technically, 0/0 is undefined, but 0.0% is a sensible result
return '%d/%d = %.0f%%'%(a, b, 0.0)
# return a dictionary of lists of fallbacks by IPv4 netblock
# the dictionary is keyed by the fingerprint of an arbitrary fallback