Script what I wrote to learn to recognise numbers on a soroban

soroban.py

import re, random, operator
random.seed()

def get_random_int():
	return random.randint(1,999)

def to_soroban(number):
	digits = {
	0: "**** || *",
	1: "*** *|| *",
	2: "** **|| *",
	3: "* ***|| *",
	4: " ****|| *",
	5: "**** ||* ",
	6: "*** *||* ",
	7: "** **||* ",
	8: "* ***||* ",
	9: " ****||* ",
	}
	soroban = []
	number_string = "{:0>13.4f}".format(number)
	i = 0
	for ch in number_string:
		if ch == '.':
			continue
		digit = digits[int(ch)]
		if i % 3 == 1:
			soroban.append(re.sub('\|\|', '.', digit))
		else:
			soroban.append(re.sub('\|\|', '-', digit))
		i += 1
	return soroban

def transform_text(cols):
	numRows = len(cols[0])
	rows = ''
	for i in range(0, numRows):
		row = ''
		for ch in cols:
			row += ch[numRows - 1 - i]
		rows += row+"\n"
	return rows

numberOfQs = 10
for i in range(1, numberOfQs+1):
	a = get_random_int()
	print "Question %d)" % (i)
	question = transform_text(to_soroban(a))
	while int(raw_input(question)) != int(a):
		print "Nope\n" 
	print "Correct\n"