Which method to check if string index is queal to character.

Mon Dec 28 15:08:22 EST 2020

On 12/28/20 10:46 AM, Marco Sulla wrote:
> On 2020年12月28日 at 17:37, Bischoop <Bischoop at vimart.net> wrote:
>>>> I'd like to check if there's "@" in a string and wondering if any method
>> is better/safer than others. I was told on one occasion that I should
>> use is than ==, so how would be on this example.
>>>> s = 'this at mail.is'
>> You could do simply
>> if "@" in s:
>> but probably what you really want is a regular expression.
>
Will add that Yes, you should always validate your inputs, but No, the 
presence of an @ sign in a text string is not sufficient to know it's a 
valid email address. Unfortunately validating that is hard.