is7bit -- determine if byte array contains only 7-bit bytes.

Determine if the byte data contains any 8bit bytes (i.e. bytes with the most significant bit set).

Download Chilkat Python Library

import chilkat


data = chilkat.CkByteData()
data.append('\x01\xFF\x41\x42\x43\xC0\xC1\xC2\x61\x62\x63',11)

if (data.is7bit() == True):
    print "All bytes are between 0 and 0x7F inclusive!"
else:
    print "Some bytes are 8bit!"