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13 changes: 11 additions & 2 deletions firebase_admin/auth.py
Original file line number Diff line number Diff line change
Expand Up @@ -422,7 +422,7 @@ def list_users(page_token=None, max_results=_user_mgt.MAX_LIST_USERS_RESULTS, ap
return client.list_users(page_token=page_token, max_results=max_results)


def create_user(**kwargs): # pylint: disable=differing-param-doc
def create_user(**kwargs): # pylint: disable=differing-param-doc
"""Creates a new user account with the specified properties.

Args:
Expand All @@ -447,7 +447,16 @@ def create_user(**kwargs): # pylint: disable=differing-param-doc
ValueError: If the specified user properties are invalid.
FirebaseError: If an error occurs while creating the user account.
"""
app = kwargs.pop('app', None)
# Check for existing user by email before creating a new user
email = kwargs.get('email')
if email:
try:
if client.get_user_by_email(email=email):
raise _auth_utils.EmailAlreadyExistsError(f"User with email {email} already exists.")
except _auth_utils.UserNotFoundError:
pass # No user exists with the given email, safe to proceed
if email and client.get_user_by_email(email=email):
raise _auth_utils.EmailAlreadyExistsError(f"User with email {email} already exists.")
client = _get_client(app)
return client.create_user(**kwargs)

Expand Down