chr ord hex ascii

volgens ascii:


dec hex chr oct

49 31 1 061
97 61 a 141

ord('a')= 97
chr(97)='a'
oct() = 0
hex(255) = ff

int('8')=8

int('ff',16) =255


int('0xFF',16)=255
int('100',2) =4

"hello".encode("hex") = '68656c6c6f'
"68656c6c6f".decode("hex") = 'hello'

maak hex van een getal
binascii.hexlify(13399084)

calculate crc32

print binascii.crc32("hello world")&0xFFFFFFFF

print zlib.crc32("hello world")