ImportError: No module named yaml

ch4n3@ch4n3-VirtualBox:~/tplmap$ pip install pyyaml

Collecting pyyaml

  Downloading PyYAML-3.12.tar.gz (253kB)

    100% |████████████████████████████████| 256kB 718kB/s 

Building wheels for collected packages: pyyaml

  Running setup.py bdist_wheel for pyyaml ... done

  Stored in directory: /home/ch4n3/.cache/pip/wheels/2c/f7/79/13f3a12cd723892437c0cfbde1230ab4d82947ff7b3839a4fc

Successfully built pyyaml

Installing collected packages: pyyaml

Successfully installed pyyaml-3.12