[issue9574] complex does not parse strings containing decimals

[Alexander Belopolsky]

Alexander Belopolsky <belopolsky at users.sourceforge.net> added the comment:

Current behavior is also consistent with that of fractions:

>>> Fraction("1/2")
Fraction(1, 2)
>>> Fraction("1 / 2")
Traceback (most recent call last):
  ..
ValueError: Invalid literal for Fraction: '1 / 2'

I am -1 on this RFE.  At most, this can be clarified in the docs.

Allowing whitespace involves too much uncertainly.  Would you allow any white space or just chr(0x20)?  End-of-line or tab in complex numbers is most likely a typo and should be flagged.  What about more exotic unicode whitespace such as chr(0x00A0) or chr(0x2009)?  Allow one or any number of whitespace characters?

Users who need a more powerful parser can use eval() or simply remove spaces from their strings before converting them to numbers.

----------
nosy: +belopolsky

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue9574>
_______________________________________