Any of the following will work:
s = "true"
(s == 'true').real
1
(s == 'false').real
0
(s == 'true').conjugate()
1
(s == '').conjugate()
0
(s == 'true').__int__()
1
(s == 'opal').__int__()
0
def as_int(s):
return (s == 'true').__int__()
>>>> as_int('false')
0
>>>> as_int('true')
1