[A-Z]+[a-z]+w{1,}

import re
pattern_password = re.compile(r'(?=.*[0-9])(?=.*[a-z])(?=.*[A-Z])[0-9a-zA-Z]{8,}')

print(bool(pattern_password.match('absghk4D')))  # True
print(bool(pattern_password.match('abc123FF')))  # True
print(bool(pattern_password.match('123ABCac')))  # True
print(bool(pattern_password.match('abcFF123')))  # True

print(bool(pattern_password.match('')))           # False
print(bool(pattern_password.match('bsghk4D')))    # False
print(bool(pattern_password.match('abc_aaFF')))   # False
print(bool(pattern_password.match('abcabcac')))   # False
print(bool(pattern_password.match('ABCDF!@##')))  # False