lot

untitled/rules.py

@@ -0,0 +1,12 @@
+import string
+
+
+def validate_cat_name(name):
+    ALLOWED = set(string.ascii_letters + string.digits)
+
+    if len(name) < 4 or len(name) > 24:
+        return "Your cat's name must be 4-24 characters long."
+    if not all(c in ALLOWED for c in name):
+        return "Letters and numbers only."
+    if not any(c in string.ascii_letters for c in name):
+        return "Your cat's name needs at least 1 letter."