Fixed address validator

Address Validator/AddressValidator.py

@@ -1,16 +1,16 @@
-def addressVal(address):
-    dot = address.find(".")
-    at = address.find("@")
-    if (dot == -1):
-        print("Invalid")
-    elif (at == -1):
-        print("Invalid")
-    else:
+import re
+
+
+def addressVal(address: str) -> None:
+    address_pattern: str = r"^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$"
+    if re.fullmatch(address_pattern, address):
         print("Valid")
+    else:
+        print("Invalid")
 
-print("This program will decide if your input is a valid email address")
-while(True):
-    print("A valid email address needs an '@' symbol and a '.'")
-    x = input("Input your email address:")
 
-    addressVal(x)
+print("This program will decide if your input is a valid email address")
+while True:
+    print("A valid email address should look like 'example@gmail.com'")
+    address = input("Input your email address:")
+    addressVal(address)