Ontario Postal Code

import re

names = ['M2N1H5', 'M2N 1H5', 'M882J8']

regex_patten = "^[A-Z]\d[A-Z]\s*\d[A-Z]\d"
# starts with Capital letter; it can have zero or one space

for name in names:
    m = re.match(regex_patten, name)

    if(m):
        #print(m.groups())
        print('matched : ', name)