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Define NotANumber as a subclass of ValueError when using class-based

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exceptions.

When raising NotANumber, pass the string that failed as the exception
value.
This commit is contained in:
Fred Drake 1999-06-29 15:49:35 +00:00
parent 9e0b6229f6
commit b8690fbc95
1 changed files with 6 additions and 2 deletions
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8
Lib/fpformat.py
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@ -21,7 +21,11 @@ decoder = re.compile(r'^([-+]?)0*(\d*)((?:\.\d*)?)(([eE][-+]?\d+)?)$')
# \3 fraction (empty or begins with point)
# \4 exponent part (empty or begins with 'e' or 'E')
NotANumber = 'fpformat.NotANumber'
try:
class NotANumber(ValueError):
pass
except TypeError:
NotANumber = 'fpformat.NotANumber'
# Return (sign, intpart, fraction, expo) or raise an exception:
# sign is '+' or '-'
@ -30,7 +34,7 @@ NotANumber = 'fpformat.NotANumber'
# expo is an integer
def extract(s):
res = decoder.match(s)
if res is None: raise NotANumber
if res is None: raise NotANumber, s
sign, intpart, fraction, exppart = res.group(1,2,3,4)
if sign == '+': sign = ''
if fraction: fraction = fraction[1:]