Answer to Question #297104 in Python for Ram

Question

Convert the Number

Given a number having ten digits, convert it to a string following the below-mentioned rules.

Rules for conversion:

1.separate the number into a set of four-three-three digits

2.Use the following prefixes for successive digits

a.Single numbers: just read them separately

b.Two consecutive numbers: double

c.Three consecutive numbers: triple

d.Four consecutive numbers: quadruple

Input

The first line of input is a string of ten digits.

Sample Input1

9887666668

Sample Output1

nine double eight seven triple six double six eight

Sample Input2

9090407368

Sample Output2

nine zero nine zero four zero seven three six eight

Answer 1

import itertools

digits = {'0': 'zero', '1': 'one', '2': 'two', '3': 'three', '4': 'four', '5': 'five', '6': 'six', '7': 'seven',
          '8': 'eight', '9': 'nine'}
prefix = {2: 'double', 3: 'triple', 4: 'quadruple'}
tel = input()
rez = []
for substr in [tel[:4], tel[4:7], tel[7:]]:
    for k, g in itertools.groupby(substr):
        n = len(list(g))
        if n > 1:
            rez.append(prefix[n])
        rez.append(digits[k])
print(' '.join(rez))