email-validator - tested with …

 - 1.3.1
 + 2.0.0.post2
 + 2.1.0.post1

pydantic/networks.py

@@ -363,12 +363,12 @@ def import_email_validator() -> None:
         import email_validator
     except ImportError as e:
         raise ImportError('email-validator is not installed, run `pip install pydantic[email]`') from e
-    if hasattr(email_validator, "__version__") and email_validator.__version__.partition(".")[0] == "2":
+    if hasattr(email_validator, '__version__') and getattr(email_validator, '__version__', '').partition('.')[0] == '2':
         return
     else:
-        input_email = b"testaddr@example.tld"
-        valid_email = validate_email(input_email, check_deliverability=False)
-        if not hasattr(valid_email, "normalized"):
+        input_email = 'testaddr@example.tld'
+        valid_email = email_validator.validate_email(input_email, check_deliverability=False)
+        if not hasattr(valid_email, 'normalized'):
             raise ImportError('email-validator version >= 2.0 required')