>>> def func(a, b):
...     if a > b:
...         a, b = b, a
...     lst = [i for i in range(a, b + 1) if i > 0]
...     return min(lst) if lst else -1
... 
>>>
>>> func(100, 200)
100
>>> func(-100, 100)
1
>>> func(-100, 1)
1
>>> func(-100, 0)
-1
>>> func(-100, -1)
-1
>>> func(-100, -2)
-1
>>>

>>> def func(s):
...     return max(s, key=lambda c: s.count(c)) if s else s
... 
>>> func('abcdefg')
'a'
>>> func('abcbdefg')
'b'
>>> func('abcbdecfg')
'b'
>>> func('abcbdecfcg')
'c'
>>> func('addbcbdecfcg')
'd'
>>> func('')
''
>>>

def func(a, b):
    if max(a, b) > 1:
        return max(1, min(a, b))
    return None

S = 'addbcbdecfcg'
I = 0
for s in set(S):
    i = S.count(s)
    if i >= I:
        I = i
        print i, s

>>> def f(a,b):
	if a*b<0: return 1
	return min(a,b) if a>0 and b>0 else -1

>>> f(9,8)
8
>>> f(9,-8)
1
>>> f(-9,-8)
-1
>>>

a="swedcfwsedfwefwefwefwef'
z={x:a.count(x) for x in a}
[x for x in z if z[x]==max(z.values())]

>>> func(-3, 1)
>>> func(1, -1)
>>>

>>> def func(a, b):
...     if a <= 0 and b <= 0:
...         return -1
...     if a > 1 and b > 1:
...         return min(a, b)
...     return 1
... 
>>> func(-2, -1)
-1
>>> func(-2, 0)
-1
>>> func(0, -2)
-1
>>> func(0, 0)
-1
>>> func(0, 1)
1
>>> func(1, 0)
1
>>> func(1, 1)
1
>>> func(1, 2)
1
>>> func(2, 2)
2
>>> func(2, 10)
2
>>> func(-10, 10)
1
>>>