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import typer
existing_usernames = ["rick", "morty"]
def maybe_create_user(username: str):
if username in existing_usernames:
print("The user already exists")
raise typer.Exit()
else:
print(f"User created: {username}")
def send_new_user_notification(username: str):
# Somehow send a notification here for the new user, maybe an email
print(f"Notification sent for new user: {username}")
def main(username: str):
maybe_create_user(username=username)
send_new_user_notification(username=username)
if __name__ == "__main__":
typer.run(main)
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