# Description:
 Count the number of exclamation marks and question marks, return the product.
# Examples
```
Product("") == 0
product("!") == 0
Product("!ab? ?") == 2
Product("!!") == 0
Product("!??") == 2
Product("!???") == 3
Product("!!!??") == 6
Product("!!!???") == 9
Product("!???!!") == 9
Product("!????!!!?") == 20
```
def product(s):
    l= list(s)  
    excl = l.count('!')
    qust = l.count('?')
    if excl == 0 | qust == 0:
        return 0
    else: 
        return (excl*qust)

def product(s):
    l= list(s)  
    excl = l.count('!')
    qust = l.count('?')
    if excl == 0 | qust == 0:
        return 0
    else: 
        return (excl*qust)
