Check words from a list as uppercase lowercase and mixed

Question

i want to check if a user wants to use a forbidden username at sign up, sadly this currently only works with lowercase. How can i make this work for upper,lower,mixed scenarios?

def forbidden_usernames(value):
    words = ["manager", "admin", "member", "staff", "support", "root"]
    if any(word in value for word in words):
        raise ValidationError(
            "Please don't use usernames like: admin, root, support etc.",
            code="invalid_username",
        )

Convert `value` to lower case for your checks. – khelwood Dec 22 '19 at 12:28 — khelwood, Dec 22 '19 at 12:28
assuming value is a string. Just do `value.lower()` – Chris Doyle Dec 22 '19 at 12:29 — Chris Doyle, Dec 22 '19 at 12:29

score 2 · Answer 1 · answered Dec 22 '19 at 12:30

2

Just write

if any(word in value.lower() for word in words):

answered Dec 22 '19 at 12:30

Jan

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score 2 · Accepted Answer · answered Dec 22 '19 at 12:30

If value is a string, then just call its lower method.

def forbidden_usernames(value):
    words = ["manager", "admin", "member", "staff", "support", "root"]
    if any(word in value.lower() for word in words):
        raise ValidationError(
            "Please don't use usernames like: admin, root, support etc.",
            code="invalid_username",
        )

Check words from a list as uppercase lowercase and mixed

2 Answers2