Add Emails class for email validation and storage

Author: elif354324

Week05/emails_elifsude_yilmaz.py

@@ -0,0 +1,39 @@
+import re
+
+
+class Emails(list):
+    def __init__(self, data):
+        self.data = []
+        self.validate(data)
+        super().__init__(self.data)
+
+    def validate(self, data):
+        # only list input
+        if not isinstance(data, list):
+            raise ValueError("Input must be a list")
+
+        email_pattern = re.compile(
+            r"^[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,}$"
+        )
+
+        seen = set()
+
+        for item in data:
+            # allow only strings
+            if not isinstance(item, str):
+                raise ValueError("All emails must be strings")
+
+            # valid email check
+            if not email_pattern.match(item):
+                raise ValueError("Invalid email address")
+
+            # remove duplicates
+            if item not in seen:
+                seen.add(item)
+                self.data.append(item)
+
+    def __repr__(self):
+        return f"Emails({self.data})"
+
+    def __str__(self):
+        return ", ".join(self.data)