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Editorial Team
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Asked: 2026-05-17T06:56:38+00:00

Is there any python function that validates E-mail addresses, aware of IDN domains ?

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Is there any python function that validates E-mail addresses, aware of IDN domains ?
For instance, user@example.com should be as correct as user@zääz.de or user@納豆.ac.jp

Thanks.

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1 Answer

  1. Editorial Team

    Django supports IDN email validation as of version 1.2.

    See the code for validation here: http://code.djangoproject.com/svn/django/trunk/django/core/validators.py

    Reference: http://docs.djangoproject.com/en/1.2/ref/forms/fields/#emailfield

    Example:

    Python 2.6.5 (r265:79063, Apr 16 2010, 13:57:41) 
[GCC 4.4.3] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from django.core.validators import validate_email
>>> try: validate_email(u'user@example.com'); print "passed"
... except: print "failed"
... 
passed
>>> try: validate_email(u'user@zääz.de'); print "passed"
... except: print "failed"
... 
passed
>>> try: validate_email(u'user@納豆.ac.jp'); print "passed"
... except: print "failed"
... 
passed
>>> try: validate_email(u'this-should-fail@@納豆.ac.jp'); print "passed"
... except: print "failed"
... 
failed

    You may need to define some environment settings before you can use Django modules, see documentation here: http://docs.djangoproject.com/en/dev/

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