Make email local-part accept Unicode characters

django/core/validators.py

@@ -176,7 +176,7 @@ class EmailValidator:
     code = "invalid"
     user_regex = _lazy_re_compile(
         # dot-atom
-        r"(^[-!#$%&'*+/=?^_`{}|~0-9A-Z]+(\.[-!#$%&'*+/=?^_`{}|~0-9A-Z]+)*\Z"
+        r"(^[-!#$%&'*+/=?^`{}|~\w]+(\.[-!#$%&'*+/=?^`{}|~\w]+)*\Z"
         # quoted-string
         r'|^"([\001-\010\013\014\016-\037!#-\[\]-\177]|\\[\001-\011\013\014\016-\177])'
         r'*"\Z)',

tests/validators/tests.py

@@ -313,6 +313,11 @@ TEST_DATA = [
     (validate_email, "example@inv-.alid-.com", ValidationError),
     (validate_email, "example@inv-.-alid.com", ValidationError),
     (validate_email, 'test@example.com\n\n<script src="x.js">', ValidationError),
+    (validate_email, "ùnîcódë@valid.com", None),
+    (validate_email, "统一码@例子.com", None),
+    (validate_email, "统一码@例子.集团", None),
+    (validate_email, "يونيكود@مثال.com", None),
+    (validate_email, "يونيكود@مثال.الجزائر", None),
     # Quoted-string format (CR not allowed)
     (validate_email, '"\\\011"@here.com', None),
     (validate_email, '"\\\012"@here.com', ValidationError),