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Python Build a Social Network with Flask Takin' Names Flask-WTF Forms

I don't quite understand the ASCII thing


Can somebody explain to me how that works, how do you know which symbols to use? I think Kenneth just supposed everyone knew this and he doesn't elaborate much on that...


1 Answer

Steven Parker
Steven Parker
217,571 Points

The reference to "ASCII" just means that he's using ordinary characters instead of fancy (unicode) characters. The regex character class shown covers upper case letters (A-Z), lower case letters (a-z), numbers (0-9) and the underscore (_).