Enhanced email address validator

Address Validator/.gitignore

@@ -0,0 +1 @@
+.DS_Store

Address Validator/AddressValidator.py

@@ -1,16 +1,42 @@
+import time
+
+
+'''
+Fixes:
+    - Now checks number of '@' symbols
+    - Now checks if characters come before and after the '@' symbol
+    - Now checks position of '.'
+'''
+
 def addressVal(address):
-    dot = address.find(".")
-    at = address.find("@")
-    if (dot == -1):
-        print("Invalid")
-    elif (at == -1):
-        print("Invalid")
-    else:
-        print("Valid")
+    """
+    Validates an email address.
+    Ensures only one '@' is present, the '@' is the not the first char,
+    there is atleast one '.' after the '@', and the '.' is not the last
+    char in the email.
+
+    Args:
+        address (str): The email to be validated.
+    Returns:
+        str: "Valid" if the email is valid, an invalid message otherwise.
+    """
+    if '@' not in address or address.count('@') != 1:
+        return "Invalid: Email must contain exactly one '@' symbol!"
+
+    at_pos = address.find('@')
+    dot_pos = address.find('.', at_pos)
+
+    if at_pos == 0 or at_pos == len(address) - 1:
+        return "Invalid: Characters must appear before or after the '@'!"
+
+    if dot_pos == -1 or dot_pos == len(address) - 1 or dot_pos < at_pos + 2:
+        return "Invalid: Dot must come after the '@'!"
+
+    return "Valid"
+
 
 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)
+    result = addressVal(x)
+    print(result)