'import pylab' works, plotting still fails

.appveyor.yml

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+# With infos from
+# http://tjelvarolsson.com/blog/how-to-continuously-test-your-python-code-on-windows-using-appveyor/
+# https://packaging.python.org/en/latest/appveyor/
+# https://github.com/rmcgibbo/python-appveyor-conda-example
+
+# Backslashes in quotes need to be escaped: \ -> "\\"
+branches:
+  except:
+    - /auto-backport-.*/
+
+environment:
+
+  global:
+    # SDK v7.0 MSVC Express 2008's SetEnv.cmd script will fail if the
+    # /E:ON and /V:ON options are not enabled in the batch script intepreter
+    # See: http://stackoverflow.com/a/13751649/163740
+    CMD_IN_ENV: cmd /E:ON /V:ON /C obvci_appveyor_python_build_env.cmd
+    # Workaround for https://github.com/conda/conda-build/issues/636
+    PYTHONIOENCODING: UTF-8
+    PYTEST_ARGS: -rawR --timeout=300 --durations=25 --cov-report= --cov=lib -m "not network"
+    PYTHONHASHSEED: 0  # Workaround for pytest-xdist flaky collection order
+                       # https://github.com/pytest-dev/pytest/issues/920
+                       # https://github.com/pytest-dev/pytest/issues/1075
+
+  matrix:
+    # for testing purpose: numpy 1.8 on py2.7, for the rest use 1.10/latest
+    # theoretically the CONDA_INSTALL_LOCN could be only two: one for 32bit,
+    # one for 64bit because we construct envs anyway. But using one for the
+    # right python version is hopefully making it fast due to package caching.
+    - TARGET_ARCH: "x64"
+      CONDA_PY: "27"
+      CONDA_NPY: "18"
+      PYTHON_VERSION: "2.7"
+      TEST_ALL: "no"
+      CONDA_INSTALL_LOCN: "C:\\Miniconda-x64"
+    - TARGET_ARCH: "x64"
+      CONDA_PY: "35"
+      CONDA_NPY: "110"
+      PYTHON_VERSION: "3.5"
+      CONDA_INSTALL_LOCN: "C:\\Miniconda35-x64"
+      TEST_ALL: "no"
+    - TARGET_ARCH: "x64"
+      CONDA_PY: "36"
+      PYTHON_VERSION: "3.6"
+      CONDA_NPY: "111"
+      CONDA_INSTALL_LOCN: "C:\\Miniconda36-x64"
+      TEST_ALL: "no"
+
+# We always use a 64-bit machine, but can build x86 distributions
+# with the PYTHON_ARCH variable (which is used by CMD_IN_ENV).
+platform:
+    - x64
+
+# all our python builds have to happen in tests_script...
+build: false
+
+cache:
+  - '%LOCALAPPDATA%\pip\Cache'
+  - '%USERPROFILE%\.cache\matplotlib'
+
+init:
+  - echo %PYTHON_VERSION% %CONDA_INSTALL_LOCN%
+
+install:
+  - set PATH=%CONDA_INSTALL_LOCN%;%CONDA_INSTALL_LOCN%\scripts;%PATH%;
+  - set PYTHONUNBUFFERED=1
+  # for obvci_appveyor_python_build_env.cmd
+  - conda update --all --yes
+  - conda install anaconda-client=1.6.3 --yes
+  - conda install -c conda-forge --yes obvious-ci
+  # for msinttypes and newer stuff
+  - conda config --prepend channels conda-forge
+  - conda config --set show_channel_urls yes
+  - conda config --set always_yes true
+  # For building conda packages
+  - conda install --yes conda-build jinja2 anaconda-client
+  # this is now the downloaded conda...
+  - conda info -a
+
+  # Fix the appveyor build environment to work with conda build
+  # workaround for missing vcvars64.bat in py34 64bit
+  - copy ci\appveyor\vcvars64.bat "C:\Program Files (x86)\Microsoft Visual Studio 10.0\VC\bin\amd64"
+
+  # For building, use a new environment which only includes the requirements for mpl
+  # same things as the requirements in ci/conda_recipe/meta.yaml
+  # if conda-forge gets a new pyqt, it might be nice to install it as well to have more backends
+  # https://github.com/conda-forge/conda-forge.github.io/issues/157#issuecomment-223536381
+  - conda create -q -n test-environment python=%PYTHON_VERSION%
+    pip setuptools numpy python-dateutil freetype=2.6 msinttypes "tk=8.5"
+    pyparsing pytz tornado "libpng>=1.6.21,<1.7" "zlib=1.2" "cycler>=0.10"
+    mock sphinx pandas
+  - activate test-environment
+  - echo %PYTHON_VERSION% %TARGET_ARCH%
+  - if %PYTHON_VERSION% == 2.7 conda install -q backports.functools_lru_cache
+  # pytest-cov>=2.3.1 due to https://github.com/pytest-dev/pytest-cov/issues/124
+  - pip install -q pytest "pytest-cov>=2.3.1" pytest-rerunfailures pytest-timeout
+
+  # Let the install prefer the static builds of the libs
+  - set LIBRARY_LIB=%CONDA_PREFIX%\Library\lib
+  - mkdir lib || cmd /c "exit /b 0"
+  - copy /y %LIBRARY_LIB%\zlibstatic.lib lib\z.lib
+  - copy /y %LIBRARY_LIB%\libpng_static.lib lib\png.lib
+  # These z.lib / png.lib are not static versions but files which end up as
+  # dependencies to the dll file. This is fine for the conda build, but not here
+  # and for the wheels
+  - del %LIBRARY_LIB%\png.lib
+  - del %LIBRARY_LIB%\z.lib
+  - set MPLBASEDIRLIST=%CONDA_PREFIX%\Library\;.
+  # enables the local freetype build
+  - copy ci\travis\setup.cfg .
+  # Show the installed packages + versions
+  - conda list
+
+test_script:
+  # Now build the thing..
+  - '%CMD_IN_ENV% pip install --no-deps -ve .'
+  # these should show no z, png, or freetype dll...
+  - set "DUMPBIN=%VS140COMNTOOLS%\..\..\VC\bin\dumpbin.exe"
+  - '"%DUMPBIN%" /DEPENDENTS lib\matplotlib\ft2font*.pyd | findstr freetype.*.dll && exit /b 1 || exit /b 0'
+  - '"%DUMPBIN%" /DEPENDENTS lib\matplotlib\_png*.pyd | findstr z.*.dll && exit /b 1 || exit /b 0'
+  - '"%DUMPBIN%" /DEPENDENTS lib\matplotlib\_png*.pyd | findstr png.*.dll && exit /b 1 || exit /b 0'
+
+  # this are optional dependencies so that we don't skip so many tests...
+  - if x%TEST_ALL% == xyes conda install -q ffmpeg inkscape miktex pillow
+  # missing packages on conda-forge for avconv mencoder imagemagick
+  # This install sometimes failed randomly :-(
+  #- choco install imagemagick
+
+  # Test import of tkagg backend
+  - python -c "import matplotlib as m; m.use('tkagg'); import matplotlib.pyplot as plt; print(plt.get_backend())"
+  # tests
+  - echo The following args are passed to pytest %PYTEST_ARGS%
+  - python tests.py %PYTEST_ARGS%
+  # Generate a html for visual tests
+  - python tools/visualize_tests.py --no-browser
+  - pip install codecov
+  - codecov -e PYTHON_VERSION PLATFORM
+
+after_test:
+  # After the tests were a success, build packages (wheels and conda)
+
+  # Build the wheel with the static libs
+  # Hide the output, the copied files really clutter the build log...
+  - '%CMD_IN_ENV% python setup.py bdist_wheel > NUL:'
+
+  # And now the conda build after a cleanup...
+  # cleanup build files so that they don't pollute the conda build but keep the wheel in dist...
+  - git clean -xdfq -e dist/
+  # cleanup the environment so that the test-environment does not leak into the conda build...
+  - set MPLBASEDIRLIST=
+  - set LIBRARY_LIB=
+  - deactivate
+  - path
+  - where python
+  - '%CMD_IN_ENV% conda config --get channels'
+  - '%CMD_IN_ENV% conda build -q .\ci\conda_recipe'
+
+  # Move the conda package into the dist directory, to register it
+  # as an "artifact" for Appveyor.
+  - copy /y %CONDA_INSTALL_LOCN%\conda-bld\win-32\*.bz2 dist || cmd /c "exit /b 0"
+  - copy /y %CONDA_INSTALL_LOCN%\conda-bld\win-64\*.bz2 dist || cmd /c "exit /b 0"
+  - dir dist\
+  - echo finished...
+
+artifacts:
+  - path: dist\*
+    name: packages
+
+  - path: result_images\*
+    name: result_images
+    type: zip
+
+on_finish:
+
+on_failure:
+  - python tools/visualize_tests.py --no-browser
+  - echo zipping images after a failure...
+  - 7z a result_images.zip result_images\ | grep -v "Compressing"
+  - appveyor PushArtifact result_images.zip
+
+matrix:
+  fast_finish: true

.circleci/config.yml

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+# Circle CI configuration file
+# https://circleci.com/docs/
+
+version: 2
+
+
+###########################################
+# Define some common steps as YAML anchors.
+#
+
+apt-run:  &apt-install
+  name: Install apt packages
+  command: |
+    sudo apt-get -qq update
+    sudo apt-get install -y \
+      inkscape \
+      libav-tools \
+      dvipng \
+      pgf \
+      lmodern \
+      cm-super \
+      texlive-latex-base \
+      texlive-latex-extra \
+      texlive-fonts-recommended \
+      texlive-latex-recommended \
+      texlive-xetex \
+      graphviz \
+      libgeos-dev \
+      otf-freefont
+
+fonts-run:  &fonts-install
+  name: Install custom fonts
+  # We manually install Humor-Sans using the package from Ubuntu 14.10.
+  # Unfortunately humor sans is not available in the Ubuntu version used by
+  # CircleCI but we can manually install the deb from a later version since
+  # it is basically just a .ttf file.
+  command: |
+    mkdir -p ~/.local/share/fonts
+    wget -nc https://github.com/google/fonts/blob/master/ofl/felipa/Felipa-Regular.ttf?raw=true -O ~/.local/share/fonts/Felipa-Regular.ttf || true
+    if [ ! -f ~/.local/share/fonts/Humor-Sans.ttf ]; then
+      wget https://mirrors.kernel.org/ubuntu/pool/universe/f/fonts-humor-sans/fonts-humor-sans_1.0-1_all.deb
+      mkdir tmp
+      dpkg -x fonts-humor-sans_1.0-1_all.deb tmp
+      cp tmp/usr/share/fonts/truetype/humor-sans/Humor-Sans.ttf ~/.local/share/fonts
+      rm -rf tmp
+    else
+      echo "Not downloading Humor-Sans; file already exists."
+    fi
+    fc-cache -f -v
+
+pip-run:  &pip-install
+  # Upgrade pip and setuptools and wheel to get as clean an install as possible
+  name: Upgrade pip, setuptools, wheel
+  command: |
+    pip install --upgrade --user pip
+    pip install --upgrade --user wheel
+    pip install --upgrade --user setuptools
+
+deps-run: &deps-install
+  name: Install Python dependencies
+  command: |
+    pip install --user python-dateutil numpy${NUMPY_VERSION} pyparsing!=2.1.6 cycler codecov coverage sphinx pillow
+    pip install --user -r doc-requirements.txt
+
+mpl-run: &mpl-install
+  name: Install Matplotlib
+  command: pip install --user -ve .
+
+doc-run: &doc-build
+  name: Build documentation
+  command: python make.py html
+  working_directory: doc
+
+doc-bundle-run: &doc-bundle
+  name: Bundle sphinx-gallery documentation artifacts
+  command: tar cf doc/build/sphinx-gallery-files.tar.gz doc/api/_as_gen doc/gallery doc/tutorials
+  when: always
+
+
+##########################################
+# Here is where the real jobs are defined.
+#
+
+jobs:
+  docs-python35:
+    docker:
+      - image: circleci/python:3.5
+    steps:
+      - checkout
+
+      - run: *apt-install
+      - run: *fonts-install
+      - run: *pip-install
+
+      - run: *deps-install
+      - run: *mpl-install
+
+      - run: *doc-build
+
+      - run: *doc-bundle
+      - store_artifacts:
+          path: doc/build/sphinx-gallery-files.tar.gz
+
+      - store_artifacts:
+          path: doc/build/html
+
+      - run:
+          name: "Built documentation is available at:"
+          command: echo "${CIRCLE_BUILD_URL}/artifacts/${CIRCLE_NODE_INDEX}/${CIRCLE_WORKING_DIRECTORY/#\~/$HOME}/doc/build/html/index.html"
+
+      - add_ssh_keys:
+          fingerprints:
+            - "78:13:59:08:61:a9:e5:09:af:df:3a:d8:89:c2:84:c0"
+      - deploy:
+          name: "Deploy new docs"
+          command: ./.circleci/deploy-docs.sh
+
+  docs-python27:
+    docker:
+      - image: circleci/python:2.7
+    steps:
+      - checkout
+
+      - run: *apt-install
+      - run: *fonts-install
+      - run: *pip-install
+
+      - run:
+          <<: *deps-install
+          environment:
+            NUMPY_VERSION: "==1.7.1"
+      # Linkchecker only works with python 2.7 for the time being.
+      # Linkchecker is currently broken with requests 2.10.0 so force an earlier version.
+      - run: pip install --user $PRE requests==2.9.2 linkchecker
+      - run: *mpl-install
+
+      - run: *doc-build
+
+      # We don't build the LaTeX docs here, so linkchecker will complain
+      - run: touch doc/build/html/Matplotlib.pdf
+
+      # Linkchecker only works with python 2.7 for the time being
+      - run:
+          name: linkchecker
+          command: ~/.local/bin/linkchecker build/html/index.html
+          working_directory: doc
+
+      - run: *doc-bundle
+      - store_artifacts:
+          path: doc/build/sphinx-gallery-files.tar.gz
+
+      - store_artifacts:
+          path: doc/build/html
+
+      - run:
+          name: "Built documentation is available at:"
+          command: echo "${CIRCLE_BUILD_URL}/artifacts/${CIRCLE_NODE_INDEX}/${CIRCLE_WORKING_DIRECTORY/#\~/$HOME}/doc/build/html/index.html"
+
+
+#########################################
+# Defining workflows gets us parallelism.
+#
+
+workflows:
+  version: 2
+  build:
+    jobs:
+      - docs-python35
+      - docs-python27

.circleci/deploy-docs.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+
+set -e
+
+if [ "$CIRCLE_PROJECT_USERNAME" != "matplotlib" -o "$CIRCLE_BRANCH" != "master" -o "$CIRCLE_PULL_REQUEST" != "" ]; then
+    echo "Not uploading docs from non-master branch or non-Matplotlib org."
+    exit
+fi
+
+git clone [email protected]:matplotlib/devdocs.git
+
+cd devdocs
+
+git checkout --orphan gh-pages || true
+git reset --hard first_commit
+
+git rm -rf .
+cp -R ../doc/build/html/. .
+touch .nojekyll
+
+git config user.email "MatplotlibCircleBot@nomail"
+git config user.name "MatplotlibCircleBot"
+git config push.default simple
+
+git add .
+git commit -m "Docs build of $CIRCLE_SHA1"
+
+git push --set-upstream origin gh-pages --force

.coveragerc

@@ -0,0 +1,13 @@
+[run]
+branch = true
+source =
+    matplotlib
+    mpl_toolkits
+omit = matplotlib/_version.py
+
+[report]
+exclude_lines =
+    raise NotImplemented
+    def __str__
+    def __repr__
+    if __name__ == .__main__.: