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Handle empty lists

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Simon Willison 2019-11-06 20:27:11 -08:00 • committed by GitHub
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5
sqlite_utils/db.py
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@ -977,7 +977,10 @@ class Table(Queryable):
# we need to adjust the batch_size down if we have too many cols
records = iter(records)
# Peek at first record to count its columns:
first_record = next(records)
try:
first_record = next(records)
except StopIteration:
return self # It was an empty list
num_columns = len(first_record.keys())
assert (
num_columns <= SQLITE_MAX_VARS