>>> import re
>>> subject = '080045000106309140003F2F7D100A0A3C0A0A0A3D0A00000800450000EE000000003F06CCF0C0A8C864C0A8646400000000000000000000000050000000F7410000'
>>> result = re.sub(r"(?=\w)(?=(?:\w\w)+$)", " ", subject)  
>>> result
'08 00 45 00 01 06 30 91 40 00 3F 2F 7D 10 0A 0A 3C 0A 0A 0A 3D 0A 00 00 08 00 45 00 00 EE 00 00 00 00 3F 06 CC F0 C0 A8 C8 64 C0 A8 64 64 00 00 00 00 00 00 00 00 00 00 00 00 50 00 00 00 F7 41 00 00'

In [77]: test = "12344345345"

In [78]: test
Out[78]: '12344345345'

In [79]: result = " ".join(test)

In [80]: result
Out[80]: '1 2 3 4 4 3 4 5 3 4 5'