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60a9609b9a
* Updated all str.format(…) to f-strings This revamps the PR #984 * Pass black * Fix flake8 * Updated objecttype * Fix black version
35 lines
795 B
Python
35 lines
795 B
Python
from __future__ import absolute_import
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from decimal import Decimal as _Decimal
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from graphql.language.ast import StringValueNode
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from .scalars import Scalar
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class Decimal(Scalar):
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"""
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The `Decimal` scalar type represents a python Decimal.
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"""
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@staticmethod
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def serialize(dec):
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if isinstance(dec, str):
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dec = _Decimal(dec)
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assert isinstance(
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dec, _Decimal
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), f'Received not compatible Decimal "{repr(dec)}"'
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return str(dec)
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@classmethod
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def parse_literal(cls, node):
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if isinstance(node, StringValueNode):
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return cls.parse_value(node.value)
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@staticmethod
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def parse_value(value):
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try:
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return _Decimal(value)
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except ValueError:
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return None
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