really unescessary because of the base64 module but eh

base64_decoder.py

def decode(s):
	result = ''
	chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/="
	for i in range(0,len(s),4):
		b = [chars.find(s[j]) for j in range(i,i+4)]
		result += chr((b[0] << 2) | (b[1] >> 4))
		if (b[2] != 64): result += chr(((b[1] & 15) << 4) | (b[2] >> 2))
		if (b[3] != 64): result += chr(((b[2] & 3) << 6) | b[3])
	return result