Closes: #1

Course3/Lab4/validations.py

@@ -4,6 +4,9 @@
 
 def validate_user(username, minlen):
     """Checks if the received username matches the required conditions."""
+    char_check = re.search(r"^([a-zA-Z])", username)
+    if char_check is None:
+        return False
     if type(username) != str:
         raise TypeError("username must be a string")
     if minlen < 1:
@@ -22,3 +25,7 @@ def validate_user(username, minlen):
 
 
 
+print(validate_user("blue.kale", 3)) # True
+print(validate_user(".blue.kale", 3)) # Currently True, should be False
+print(validate_user("red_quinoa", 4)) # True
+print(validate_user("_red_quinoa", 4)) # Currently True, should be False