python-recaptcha binary package in Ubuntu Bionic amd64

 This Python package provides modules implementing clients for both
 reCAPTCHA and reCAPTCHA Mailhide.
 .
 reCAPTCHA hinders automated abuse of web sites (such as comment spam
 or bogus registrations) by using a CAPTCHA to try to ensure that
 humans are involved.
 .
 reCAPTCHA Mailhide allows web sites to obfuscate email addresses,
 revealing them only if a reCAPTCHA is solved.
 .
 These modules access a web service that requires sites running the
 reCAPCHA client to register (at no cost) for an API key. On the other
 hand, no imaging libraries or complex computations are needed to
 generate and check CAPTCHAs.

Source package