Collecting ptan==0.2.1
  1 location(s) to search for versions of ptan:
  * https://pypi.python.org/simple/ptan/
  Getting page https://pypi.python.org/simple/ptan/
  Analyzing links from page https://pypi.org/simple/ptan/
    Found link https://files.pythonhosted.org/packages/75/d7/71aee221508ab56614b872d7d9ae22983cb13593f76a71e073d2f165a1dd/ptan-0.1.tar.gz#sha256=1ded51c39aec5d38abf221be8c389cf7abc6b1235ddde6627505278726b56e0d (from https://pypi.org/simple/ptan/), version: 0.1
    Found link https://files.pythonhosted.org/packages/30/b7/46b52ee9ddc97c3b795a561c0eadfbbe1020a50aac2eb492f6cf46738cfd/ptan-0.2.1-py3-none-any.whl#sha256=fdb348bfa9fba7b5c60bec77905873afd351392eb238ccda1298d913d2c1554a (from https://pypi.org/simple/ptan/), version: 0.2.1
    Found link https://files.pythonhosted.org/packages/b9/c6/3c4638252d96cb333362f23bcf454f96d4ea6958272b5168e23457936287/ptan-0.2.1.tar.gz#sha256=a6b7f8292ebc3b91a223dbb3ca0dd90fcdeb0bbd8a439469db9d6119d2f4a990 (from https://pypi.org/simple/ptan/), version: 0.2.1
  Using version 0.2.1 (newest of versions: 0.2.1)
  Downloading https://files.pythonhosted.org/packages/30/b7/46b52ee9ddc97c3b795a561c0eadfbbe1020a50aac2eb492f6cf46738cfd/ptan-0.2.1-py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/30/b7/46b52ee9ddc97c3b795a561c0eadfbbe1020a50aac2eb492f6cf46738cfd/ptan-0.2.1-py3-none-any.whl#sha256=fdb348bfa9fba7b5c60bec77905873afd351392eb238ccda1298d913d2c1554a (from https://pypi.org/simple/ptan/)
  Saved /tmp/tmpfggzxt9m/ptan-0.2.1-py3-none-any.whl
Skipping ptan, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-build-_eyb9ahs/ptan