Collecting opt-einsum==2.0.0
  1 location(s) to search for versions of opt-einsum:
  * https://pypi.python.org/simple/opt-einsum/
  Getting page https://pypi.python.org/simple/opt-einsum/
  Analyzing links from page https://pypi.org/simple/opt-einsum/
    Found link https://files.pythonhosted.org/packages/0a/f4/0c6e221ea86a2cdfc5e7fd2fa99cfe0002a818112d9e066244258d7675f5/opt_einsum-0.2.0-py2.py3-none-any.whl#sha256=f2090d098388bf8a4fad20410f76ad81db16b9d4bf8c95e6539fca6aee7aa227 (from https://pypi.org/simple/opt-einsum/), version: 0.2.0
    Found link https://files.pythonhosted.org/packages/4a/29/bddc19c2f10ae2f998fb01173776342ef3bd590cea7ae38da8829bbb7dc6/opt_einsum-1.0.1.tar.gz#sha256=f8733e18153c6991f203d39b359ddc08f209893648ce56caf8655b0809d5dbd7 (from https://pypi.org/simple/opt-einsum/), version: 1.0.1
    Found link https://files.pythonhosted.org/packages/6b/c8/e4c0cd49d054073b704de1d9827386570183b8e91b619b0d7188acf6fbf6/opt_einsum-2.0.0-py2.py3-none-any.whl#sha256=d991589c4cf82c3581b8c44a33edefe7fc1d245055cf9f3ffbb2299bb29f49dd (from https://pypi.org/simple/opt-einsum/), version: 2.0.0
    Found link https://files.pythonhosted.org/packages/de/a2/ae05b691dbd14e2a9ac146ec8a43118f4f681cab09d60b528c3b9bb67b68/opt_einsum-2.0.0.tar.gz#sha256=b1a67039dae6a7d2aa47a522ac19bef381fff53f9b243a50af3827ed9539bfcc (from https://pypi.org/simple/opt-einsum/), version: 2.0.0
  Using version 2.0.0 (newest of versions: 2.0.0)
  Downloading https://files.pythonhosted.org/packages/6b/c8/e4c0cd49d054073b704de1d9827386570183b8e91b619b0d7188acf6fbf6/opt_einsum-2.0.0-py2.py3-none-any.whl
  Downloading from URL https://files.pythonhosted.org/packages/6b/c8/e4c0cd49d054073b704de1d9827386570183b8e91b619b0d7188acf6fbf6/opt_einsum-2.0.0-py2.py3-none-any.whl#sha256=d991589c4cf82c3581b8c44a33edefe7fc1d245055cf9f3ffbb2299bb29f49dd (from https://pypi.org/simple/opt-einsum/)
  Saved /tmp/tmpq0pw15oz/opt_einsum-2.0.0-py2.py3-none-any.whl
Skipping opt-einsum, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-build-2bp215qn/opt-einsum