trying to recall a regex for re.split()

[Pedroski55]

I am no expert like you guys, but I would forget the numbers and just concentrate on the letters.

measurements = ['2.5Hz', '2.5mHz', '2.5GHz', '2.5THz', '2.5mTHz', '2.5']

my_pattern = re.compile("h|H|m|G|T")
for m in measurements:
    if 'H' in m or 'h' in m:
        print('measured frequency is', m)
        start_pos = my_pattern.search(m).span()[0]
        print('number =', m[:start_pos], 'units =', m[start_pos:])
    else:
        continue