Created temporary directory: /tmp/pip-ephem-wheel-cache-_j9hn7rt
Created temporary directory: /tmp/pip-req-tracker-vghj3vpk
Created requirements tracker '/tmp/pip-req-tracker-vghj3vpk'
Created temporary directory: /tmp/pip-wheel-f5q4e182
Collecting plotly-express==0.1a1
  1 location(s) to search for versions of plotly-express:
  * https://pypi.org/simple/plotly-express/
  Getting page https://pypi.org/simple/plotly-express/
  Analyzing links from page https://pypi.org/simple/plotly-express/
    Found link https://files.pythonhosted.org/packages/a9/ac/77258d2282b93d5f96a017fbbd94191b3d9503e98db50fec879baab696cd/plotly_express-0.1a1-py2.py3-none-any.whl#sha256=c99528f898dd783fbd7a0db13eeeebaba1ad6845224a1a13dec02053642f47c8 (from https://pypi.org/simple/plotly-express/), version: 0.1a1
    Found link https://files.pythonhosted.org/packages/70/e3/e2c03f500a66a7786729408f4fd128e281ba9b05eadcb401dd8137298587/plotly_express-0.1a1.tar.gz#sha256=b4de9d660c1be552f368d21f7c6a01e66630067cfacb6bc00ae2799bdc50bc89 (from https://pypi.org/simple/plotly-express/), version: 0.1a1
  Using version 0.1a1 (newest of versions: 0.1a1)
  Created temporary directory: /tmp/pip-unpack-q2gbdh0r
  Downloading https://files.pythonhosted.org/packages/a9/ac/77258d2282b93d5f96a017fbbd94191b3d9503e98db50fec879baab696cd/plotly_express-0.1a1-py2.py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/a9/ac/77258d2282b93d5f96a017fbbd94191b3d9503e98db50fec879baab696cd/plotly_express-0.1a1-py2.py3-none-any.whl#sha256=c99528f898dd783fbd7a0db13eeeebaba1ad6845224a1a13dec02053642f47c8 (from https://pypi.org/simple/plotly-express/)
  Saved /tmp/tmpjlvhf69h/plotly_express-0.1a1-py2.py3-none-any.whl
  Added plotly-express==0.1a1 from https://files.pythonhosted.org/packages/a9/ac/77258d2282b93d5f96a017fbbd94191b3d9503e98db50fec879baab696cd/plotly_express-0.1a1-py2.py3-none-any.whl#sha256=c99528f898dd783fbd7a0db13eeeebaba1ad6845224a1a13dec02053642f47c8 to build tracker '/tmp/pip-req-tracker-vghj3vpk'
  Removed plotly-express==0.1a1 from https://files.pythonhosted.org/packages/a9/ac/77258d2282b93d5f96a017fbbd94191b3d9503e98db50fec879baab696cd/plotly_express-0.1a1-py2.py3-none-any.whl#sha256=c99528f898dd783fbd7a0db13eeeebaba1ad6845224a1a13dec02053642f47c8 from build tracker '/tmp/pip-req-tracker-vghj3vpk'
Skipping plotly-express, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-wheel-f5q4e182/plotly-express
Removed build tracker '/tmp/pip-req-tracker-vghj3vpk'