gnu: Add python-pytest-2.9.2.

* gnu/packages/python.scm (python-pytest-2.9.2): New variable.

gnu: python-sqlalchemy-utils: Mention optional dependencies in description.

* gnu/packages/python.scm (python-sqlalchemy-utils,
python2-sqlalchemy-utils)[description]: Mention optional dependencies.

Signed-off-by: Leo Famulari <leo@famulari.name>

gnu: python-sqlalchemy-utils: Use python-pytest.

* gnu/packages/python.scm (python-sqlalchemy-utils)[native-inputs]: Add
python-pytest.

Signed-off-by: Marius Bakke <mbakke@fastmail.com>

gnu: python-sqlalchemy-utils: Propagate existing inputs.

* gnu/packages/python.scm (python-sqlalchemy-utils)[inputs]: Move to ...
[propagated-inputs]: ... here.

Signed-off-by: Marius Bakke <mbakke@fastmail.com>

gnu: Add python-flask-babel.

* gnu/packages/python.scm (python-flask-babel, python2-flask-babel):
  New variables.

Signed-off-by: Marius Bakke <mbakke@fastmail.com>

gnu: Add python-furl.

* gnu/packages/python.scm (python-furl, python2-furl): New variables.

Signed-off-by: Marius Bakke <mbakke@fastmail.com>

gnu: Add python-orderedmultidict.

* gnu/packages/python.scm (python-orderedmultidict, python2-orderedmultidict):
  New variables.

Signed-off-by: Marius Bakke <mbakke@fastmail.com>

gnu: Add python-pycodestyle.

* gnu/packages/python.scm (python-pycodestyle, python2-pycodestyle):
  New variables.

Signed-off-by: Marius Bakke <mbakke@fastmail.com>

gnu: python-axolotl-curve25519: Fix license.

* gnu/packages/python.scm (python-axolotl-curve25519,
python2-axolotl-curve25519)[license]: Replace ISC with BSD-3.

gnu: Add python-axolotl.

* gnu/packages/python.scm (python-axolotl, python2-axolotl): New variables.

Signed-off-by: Leo Famulari <leo@famulari.name>

gnu: Add python-axolotl-curve25519.

* gnu/packages/python.scm (python-axolotl-curve25519,
  python2-axolotl-curve25519): New variables.

Signed-off-by: Leo Famulari <leo@famulari.name>

gnu: Add python-pafy.

* gnu/packages/python.scm (python-pafy): New variable.

Signed-off-by: Marius Bakke <mbakke@fastmail.com>

gnu: Add jupyter.

* gnu/packages/python.scm (jupyter): New variable.

gnu: python-ipython: Update to 4.0.0.

* gnu/packages/python.scm (python-ipython): Update to 4.0.0.
[inputs]: Keep only "readline" and "which"; move the remaining inputs
to propagated-inputs, except for "python-requests" and "python-nose"
which are moved to native-inputs.
[propagated-inputs]: Add "python-pexpect", "python-pickleshare",
"python-simplegeneric", "python-traitlets", "python-ipykernel".
[native-inputs]: Add "python-testpath".
[arguments]: Enable building of HTML documentation.
[source]: Remove patch.
* gnu/packages/patches/python-ipython-inputhook-ctype.patch: Remove
patch.
* gnu/local.mk (dist_patch_DATA): Remove it.

gnu: Add python-jupyter-console.

* gnu/packages/python.scm (python-jupyter-console,
python2-jupyter-console): New variable.

gnu: Add python-ipywidgets.

* gnu/packages/python.scm (python-ipywidgets, python2-ipywidgets): New
variables.

gnu: Add python-widgetsnbextension.

* gnu/packages/python.scm (python-widgetsnbextension,
python2-widgetsnbextension): New variables.

gnu: Add python-notebook.

* gnu/packages/python.scm (python-notebook, python2-notebook): New
variables.

gnu: Add python-nbconvert.

* gnu/packages/python.scm (python-nbconvert, python2-nbconvert): New
variables.

gnu: Add python-entrypoints.

* gnu/packages/python.scm (python-entrypoints, python2-entrypoints): New
variables.