14.9. PickList.__convert8(): Convert an 8-bit
number
This method is used to process one of the 8-bit numbers
from the rgb.txt file.
huey
# - - - P i c k L i s t . _ _ c o n v e r t 8
def __convert8 ( self, s ):
"""Convert a string to an 8-bit number.
[ if s is the string representation of a number in
[0,255] ->
return s as an integer
else -> raise IOError ]
"""
#-- 1 --
# [ if s can be converted to an integer ->
# result := s converted to an integer
# else -> raise IOError ]
try:
result = int ( s )
except ValueError:
raise IOError, "Bad color value: '%s'" % s
#-- 2 --
return result
