Collecting Flask-Bootstrap4==4.0.0
  1 location(s) to search for versions of Flask-Bootstrap4:
  * https://pypi.python.org/simple/flask-bootstrap4/
  Getting page https://pypi.python.org/simple/flask-bootstrap4/
  Analyzing links from page https://pypi.python.org/simple/flask-bootstrap4/
    Found link https://pypi.python.org/packages/4b/8d/2895ff1534755118b8ee31de47b07cc063079c33634ae1afd2ac3faf6e63/Flask-Bootstrap4-4.0.0.tar.gz#md5=8757562b90395a79c01ac86cc45c76c8 (from https://pypi.python.org/simple/flask-bootstrap4/), version: 4.0.0
    Found link https://pypi.python.org/packages/aa/7b/a329cb07b1a31691d06bcc7ae1239a1d9634062c0667564dcc03e774ab01/Flask_Bootstrap4-4.0.0-py3-none-any.whl#md5=e11a7cc7a99213f8bec91312fe42e1ed (from https://pypi.python.org/simple/flask-bootstrap4/), version: 4.0.0
  Using version 4.0.0 (newest of versions: 4.0.0)
  Downloading Flask_Bootstrap4-4.0.0-py3-none-any.whl (873kB)
  Downloading from URL https://pypi.python.org/packages/aa/7b/a329cb07b1a31691d06bcc7ae1239a1d9634062c0667564dcc03e774ab01/Flask_Bootstrap4-4.0.0-py3-none-any.whl#md5=e11a7cc7a99213f8bec91312fe42e1ed (from https://pypi.python.org/simple/flask-bootstrap4/)
  Saved /tmp/tmp_5ioe95t/Flask_Bootstrap4-4.0.0-py3-none-any.whl
Skipping Flask-Bootstrap4, due to already being wheel.
Cleaning up...
  Removing source in /tmp/pip-build-_bm0yc9d/Flask-Bootstrap4