Collecting csrf==0.1b1
  1 location(s) to search for versions of csrf:
  * https://pypi.python.org/simple/csrf/
  Getting page https://pypi.python.org/simple/csrf/
  Analyzing links from page https://pypi.org/simple/csrf/
    Found link https://files.pythonhosted.org/packages/00/58/73ed07ef8b09052f7b7955c0ad7e3bc9f624c9e3b86dcf261aa0d2ad99a0/csrf-0.1b1-py3-none-any.whl#sha256=87d34ec729dd321e80e6dcbad90537df112089204fcf9e488a8bbd1301831841 (from https://pypi.org/simple/csrf/), version: 0.1b1
    Found link https://files.pythonhosted.org/packages/a0/4c/f8d95a20815a0e8ba8fb0451295c7950464523f5204aa55f9304a8464a79/csrf-0.1b1.tar.gz#sha256=b44eca40f74a46d9f5846c78a3f2488123d051346e09e3133af0029bcaf33a66 (from https://pypi.org/simple/csrf/), version: 0.1b1
  Using version 0.1b1 (newest of versions: 0.1b1)
  Downloading https://files.pythonhosted.org/packages/00/58/73ed07ef8b09052f7b7955c0ad7e3bc9f624c9e3b86dcf261aa0d2ad99a0/csrf-0.1b1-py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/00/58/73ed07ef8b09052f7b7955c0ad7e3bc9f624c9e3b86dcf261aa0d2ad99a0/csrf-0.1b1-py3-none-any.whl#sha256=87d34ec729dd321e80e6dcbad90537df112089204fcf9e488a8bbd1301831841 (from https://pypi.org/simple/csrf/)
  Saved /tmp/tmprbld_7us/csrf-0.1b1-py3-none-any.whl
Skipping csrf, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-build-43h7uj7c/csrf