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Used Decimal.scaleb() in backends.utils.format_number() and DecimalField.widget_attrs() to improve performance.

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Mariusz Felisiak 2017-12-30 18:05:15 +01:00 committed by GitHub
parent 9bc4d90d1a
commit 51a00749e9
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2 changed files with 2 additions and 2 deletions
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2
django/db/backends/utils.py
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@ -236,7 +236,7 @@ def format_number(value, max_digits, decimal_places):
if max_digits is not None: if max_digits is not None:
context.prec = max_digits context.prec = max_digits
if decimal_places is not None: if decimal_places is not None:
value = value.quantize(decimal.Decimal(".1") ** decimal_places, context=context) value = value.quantize(decimal.Decimal(1).scaleb(-decimal_places), context=context)
else: else:
context.traps[decimal.Rounded] = 1 context.traps[decimal.Rounded] = 1
value = context.create_decimal(value) value = context.create_decimal(value)

2
django/forms/fields.py
View File

@ -360,7 +360,7 @@ class DecimalField(IntegerField):
if self.decimal_places is not None: if self.decimal_places is not None:
# Use exponential notation for small values since they might # Use exponential notation for small values since they might
# be parsed as 0 otherwise. ref #20765 # be parsed as 0 otherwise. ref #20765
step = str(Decimal('1') / 10 ** self.decimal_places).lower() step = str(Decimal(1).scaleb(-self.decimal_places)).lower()
else: else:
step = 'any' step = 'any'
attrs.setdefault('step', step) attrs.setdefault('step', step)