[Tutor] Input

[Ricardo Aráoz]

Kent Johnson wrote:
> Ricardo Aráoz wrote:
> 
>> _validChars = {
>>                 'X' :
>> 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890'
>>                 , '9' : '1234567890'
>>                 , '-' : '-1234567890'
>>                 , 'A' :
>> 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
>>                 , '!' : 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'}
>> _validKeys = _validChars.keys()
> 
> <snip>
>>         while maskChar not in _validKeys :
> 
> There is no need to make _validKeys, you can write
>   while maskChar not in _validChars
> which is actually more efficient, in general, because it is a hash table
> lookup instead of searching a list.
> 
> Kent
> 

Thanks Kent, I'll wait to see if there are more corrections and re-post
the corrected code.