gistfile1.py

import sys

def char(i):
    '''
    0-9A-Z => sp(decimal)
    '''
    if i >= 0 and i <= 9:
        return chr(ord('0')+i)
    elif i < 36:
        return chr(ord('A')+i-10)
    else:
        return f'🔣({i})'

def dtoh(h, d):
    assert h > 0
    def max_digit(x):
        c = 1
        while (h ** c) <= x:
            c += 1
        return c
    def to(x):
        for i in range(max_digit(x)):
            yield char(x % h)
            x = x // h

    return ''.join(reversed(list(to(d))))

print(dtoh(int(sys.argv[1]), int(sys.argv[2])))