"""Generic types and definitions
"""
ALPHA_LOWER = 'abcdefghijklmnopqrstuvwxyz'
ALPHA_UPPER = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'
DIGIT = '0123456789'
B32_CHAR = ALPHA_LOWER + '234567'
ALPHA_LOWER_OR_DIGIT = ALPHA_LOWER + DIGIT