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Issue #26331: Implement the parsing part of PEP 515.

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Thanks to Georg Brandl for the patch.
This commit is contained in:
Brett Cannon 2016-09-09 14:57:09 -07:00
parent ee73a65745
commit a721abac29
22 changed files with 743 additions and 205 deletions
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10
Lib/_pydecimal.py
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@ -589,7 +589,7 @@ class Decimal(object):
# From a string
# REs insist on real strings, so we can too.
if isinstance(value, str):
m = _parser(value.strip())
m = _parser(value.strip().replace("_", ""))
if m is None:
if context is None:
context = getcontext()
@ -4125,7 +4125,7 @@ class Context(object):
This will make it round up for that operation.
"""
rounding = self.rounding
self.rounding= type
self.rounding = type
return rounding
def create_decimal(self, num='0'):
@ -4134,10 +4134,10 @@ class Context(object):
This method implements the to-number operation of the
IBM Decimal specification."""
if isinstance(num, str) and num != num.strip():
if isinstance(num, str) and (num != num.strip() or '_' in num):
return self._raise_error(ConversionSyntax,
"no trailing or leading whitespace is "
"permitted.")
"trailing or leading whitespace and "
"underscores are not permitted.")
d = Decimal(num, context=self)
if d._isnan() and len(d._int) > self.prec - self.clamp: