Scapy supports both Python 2.7.x and 3.4+, starting from Scapy version 2.x. However, for versions lower than 2.3.3, Scapy needs Python 2.5 and 2.7, or 3.4+ for versions after that. Since we already installed that latest Python version, it should be fine to run the latest version of Scapy without a problem.
Also, Scapy has an older version (1.x), which is deprecated and doesn't provide support for Python 3 and works only on Python 2.4.