[Python-Dev] A type of out-of-range exception for %c (original) (raw)

Serhiy Storchaka storchaka at gmail.com
Sun Jun 23 20:59:37 CEST 2013


Currently %c formatting raises OverflowError if an argument is out of range.

'%c' % 1114112 Traceback (most recent call last): File "", line 1, in OverflowError: %c arg not in range(0x110000) '{:c}'.format(1114112) Traceback (most recent call last): File "", line 1, in OverflowError: %c arg not in range(0x110000)

The same for PyUnicode_Format(), PyUnicode_FromFromat() and PyUnicode_FromFromatV() in C API.

But chr() raises ValueError.

chr(1114112) Traceback (most recent call last): File "", line 1, in ValueError: chr() arg not in range(0x110000)

And ValueError looks more suitable, because it is not really an overflow (limitation of the C language, or a C type). Can we change an exception type for %c formatting from OverflowError to ValueError?



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