parseNum.py

d = {}

for i, v in enumerate('zero one two three four five six seven eight nine ten eleven twelve thirteen'.split()):
    d[v] = i   

for v, i in d.items():
    if 3 < i < 10:
        d[v + 'teen'] = i + 10
    
d.update({
    'fifteen': 15, 
    'eighteen': 18,
})

for i, v in enumerate('twenty thirty forty fifty sixty seventy eighty ninety'.split()):
    d[v] = (i + 2) * 10

def parse_int(s):
    if 'million' in s: 
        return 1E6
    s = s.replace('thousand', '|').replace('and ', '').replace('-', ' ').replace('hundred', '-')
    keys = [[sum(d[k] for k in x.strip().split()) for x in reversed(a.split('-'))] for a in reversed(s.split('|'))]
    return sum(sum(100 ** j * 1000 ** i * a for j, a in enumerate(b)) for i, b in enumerate(keys))