[DOC] Switch from Sphinx to MkDocs (pyjanitor-devs#897)

This resolves pyjanitor-devs#894. The majority of votes from active maintainers is to move to mkdocs.

The things done in this PR include:

1. Switching our docs build system from sphinx to mkdocs.
2. Refactoring functions.py and utils.py to play more nicely with automatic API docs.
3. Remove notebooks from the docs (temporarily) until we bring them back.
4. Mark tests as being turtle (slow), in preparation for splitting tests into two to make them run faster.

Author: ericmjl

.devcontainer/Dockerfile

@@ -29,9 +29,10 @@ RUN apt-get update \
     #
     # Install pylint
     && /opt/conda/bin/pip install pylint \
+    && /opt/conda/bin/conda install mamba -c conda-forge \
     #
     # Update Python environment based on environment-dev.yml (if present)
-    && if [ -f "/tmp/conda-tmp/environment-dev.yml" ]; then /opt/conda/bin/conda env update -n base -f /tmp/conda-tmp/environment-dev.yml; fi \
+    && if [ -f "/tmp/conda-tmp/environment-dev.yml" ]; then /opt/conda/bin/mamba env update -n base -f /tmp/conda-tmp/environment-dev.yml; fi \
     && rm -rf /tmp/conda-tmp \
     #
     # Create a non-root user to use if preferred - see https://aka.ms/vscode-remote/containers/non-root-user.

.devcontainer/devcontainer.json

@@ -2,8 +2,12 @@
 // https://github.com/microsoft/vscode-dev-containers/tree/v0.117.1/containers/python-3-miniconda
 {
 	"name": "pyjanitor dev container",
-	"context": "..",
-	"image": "registry.hub.docker.com/ericmjl/pyjanitor:devcontainer",
+	// "context": "..",
+	// "image": "registry.hub.docker.com/ericmjl/pyjanitor:devcontainer",
+	"build": {
+		"dockerfile": "Dockerfile",
+		"context": ".."
+	},
 	// Set *default* container specific settings.json values on container create.
 	"settings": {
 		"terminal.integrated.shell.linux": "/bin/bash",
@@ -16,12 +20,15 @@
 	"extensions": [
 		"ms-python.python",
 		"ms-python.vscode-pylance",
-		"ms-vsliveshare.vsliveshare-pack"
+		"ms-vsliveshare.vsliveshare-pack",
+		"arcticicestudio.nord-visual-studio-code"
 	],
 	// Use 'forwardPorts' to make a list of ports inside the container available locally.
-	// "forwardPorts": [],
+	"forwardPorts": [
+		8000
+	],
 	// Use 'postCreateCommand' to run commands after the container is created.
-	"postCreateCommand": "python setup.py develop"
+	"postCreateCommand": "pre-commit install && python setup.py develop"
 	// Uncomment to connect as a non-root user. See https://aka.ms/vscode-remote/containers/non-root.
 	// "remoteUser": "vscode"
 }

.flake8

@@ -0,0 +1,4 @@
+[flake8]
+per-file-ignores =
+    janitor/functions/__init__.py:F401
+    janitor/accessors/__init__.py:F401

.github/workflows/codecov.yml

@@ -35,9 +35,7 @@ jobs:
 
       - name: Build environment
         if: steps.cache-environment.outputs.cache-hit != 'true'
-        run: |
-          conda env create -f environment-dev.yml
-          python -m pip install .
+        run: bash ./scripts/ci/build_environment.sh
 
       - name: Install conda-pack
         if: steps.cache-environment.outputs.cache-hit != 'true'

.github/workflows/docs-preview.yml

@@ -0,0 +1,90 @@
+name: Build documentation preview
+
+on:
+  [pull_request]
+
+jobs:
+  build-environment:
+    runs-on: ubuntu-18.04
+    name: Build environment
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      # See: https://github.com/marketplace/actions/setup-conda
+      - name: Setup anaconda
+        uses: s-weigand/setup-conda@v1
+        with:
+          conda-channels: "conda-forge"
+
+      - name: Cache conda environment
+        id: cache-environment
+        uses: actions/cache@v2
+        # Conda environment build step depends on two files,
+        # so we ensure that the hash key contains both their hashes.
+        with:
+          path: |
+            pyjanitor-dev.tar.gz
+          key: ${{ runner.os }}-env.${{ hashFiles('environment-dev.yml') }}
+
+      - name: Build environment
+        if: steps.cache-environment.outputs.cache-hit != 'true'
+        run: bash ./scripts/ci/build_environment.sh
+
+      - name: Install conda-pack
+        if: steps.cache-environment.outputs.cache-hit != 'true'
+        run: conda install -c conda-forge conda-pack
+
+      - name: Run conda-pack
+        if: steps.cache-environment.outputs.cache-hit != 'true'
+        run: conda pack -n pyjanitor-dev -o pyjanitor-dev.tar.gz
+
+      # See: https://github.com/actions/upload-artifact
+      - name: Upload environment
+        uses: actions/upload-artifact@v2
+        with:
+          name: pyjanitor-dev-tarball
+          path: pyjanitor-dev.tar.gz
+
+  docs:
+    name: Build static site docs
+    runs-on: ubuntu-latest
+    needs: build-environment
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      # https://github.com/actions/download-artifact
+      - name: Download environment tarball
+        uses: actions/download-artifact@v2
+        with:
+          name: pyjanitor-dev-tarball
+
+      - name: Unpack environment and activate it
+        run: |
+          bash scripts/ci/unpack_environment.sh
+
+      - name: Build docs
+        run: |
+          source /tmp/pyjanitor-dev_env/bin/activate
+          python -m ipykernel install --user --name pyjanitor-dev
+          pip install -e .
+          mkdocs build
+
+      - name: Deploy docs preview to Netlify
+        uses: nwtgck/[email protected]
+        with:
+          publish-dir: "./site"
+          production-deploy: false
+          github-token: ${{ secrets.GHPAGES_TOKEN }}
+          deploy-message: "Deploy from GitHub Actions"
+          enable-pull-request-comment: true
+          enable-commit-comment: false
+          overwrites-pull-request-comment: true
+          alias: deploy-preview-${{ github.event.number }}
+        env:
+          NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
+          NETLIFY_SITE_ID: ${{ secrets.NETLIFY_SITE_ID }}
+        timeout-minutes: 1

.github/workflows/docs.yml

@@ -4,7 +4,6 @@ on:
   push:
     branches:
       - dev
-      - ghactions-docs
 
 jobs:
   build-environment:
@@ -33,9 +32,7 @@ jobs:
 
       - name: Build environment
         if: steps.cache-environment.outputs.cache-hit != 'true'
-        run: |
-          conda env create -f environment-dev.yml
-          python -m pip install .
+        run: bash ./scripts/ci/build_environment.sh
 
       - name: Install conda-pack
         if: steps.cache-environment.outputs.cache-hit != 'true'
@@ -76,14 +73,14 @@ jobs:
           source /tmp/pyjanitor-dev_env/bin/activate
           python -m ipykernel install --user --name pyjanitor-dev
           pip install -e .
-          make docs
+          mkdocs build
 
       - name: Deploy website
         uses: peaceiris/actions-gh-pages@v3
         with:
           # https://github.com/peaceiris/actions-gh-pages#%EF%B8%8F-set-personal-access-token-personal_token
           personal_token: ${{ secrets.GHPAGES_TOKEN }}
-          publish_dir: ./docs/_build/html
+          publish_dir: ./site/
           publish_branch: gh-pages
           # destination_dir: manuscript
           allow_empty_commit: false

.github/workflows/tests.yml

@@ -30,9 +30,7 @@ jobs:
 
       - name: Build environment
         if: steps.cache-environment.outputs.cache-hit != 'true'
-        run: |
-          conda env create -f environment-dev.yml
-          python -m pip install .
+        run: bash ./scripts/ci/build_environment.sh
 
       - name: Install conda-pack
         if: steps.cache-environment.outputs.cache-hit != 'true'
@@ -127,9 +125,9 @@ jobs:
         run: |
           source /tmp/pyjanitor-dev_env/bin/activate
           python -m pip install -e .
-          cd docs && make html
+          mkdocs build
 
       - name: Netlify PR preview
         uses: netlify/actions/cli@master
         with:
-          args: deploy --site ${{ secrets.NETLIFY_SITE_ID }} --auth ${{ secrets.NETLIFY_AUTH_TOKEN }} --dir=docs/_build/html/
+          args: deploy --site ${{ secrets.NETLIFY_SITE_ID }} --auth ${{ secrets.NETLIFY_AUTH_TOKEN }} --dir=site/

AUTHORS.md

@@ -0,0 +1,103 @@
+# Contributors
+
+Once you have added your contribution to `pyjanitor`,
+please add your name using this markdown template:
+
+```
+[@githubname](https://github.com/githubname) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/issues?q=is%3Aclosed+mentions%3Agithubname)
+```
+
+You can copy/paste the template and replace `githubname` with your username.
+
+Contributions that did not leave a commit trace
+are indicated in bullet points below each user's username.
+
+Leads
+-----
+
+- [@ericmjl](https://github.com/ericmjl) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3Aericmjl)
+- [@szuckerman](https://github.com/szuckerman) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3Aszuckerman)
+- [@zbarry](https://github.com/zbarry) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3Azbarry)
+    - Co-led sprint at SciPy 2019.
+- [@hectormz](https://github.com/hectormz) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3Ahectormz)
+- [@jk3587](https://github.com/jk3587) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3Ajk3587)
+    - Tagged issues at SciPy 2019.
+- [@sallyhong](https://github.com/sallyhong) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3Asallyhong)
+    - Tagged issues at SciPy 2019.
+- [@zjpoh](https://github.com/zjpoh) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3Azjpoh)
+    - Started pyspark sub-module.
+- [@anzelpwj](https://github.com/anzelpwj) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3Aanzelpwj)
+- [@samukweku](https://github.com/samukweku) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3Asamukweku)
+- [@loganthomas](https://github.com/loganthomas) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/issues?q=is%3Aclosed+mentions%3Aloganthomas)
+    - Helped others with `git` issues at SciPy 2019.
+- [@nvamsikrishna05](https://github.com/nvamsikrishna05) |  [contributions](https://github.com/pyjanitor-devs/pyjanitor/issues?q=is%3Aclosed+mentions%3Anvamsikrishna05)
+
+
+Contributors
+------------
+
+- [@JoshuaC3](https://github.com/JoshuaC3) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3AJoshuaC3)
+- [@cduvallet](https://github.com/cduvallet) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3Acduvallet)
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+- [@jcvall](https://github.com/jcvall) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3Ajcvall)
+- [@CWen001](https://github.com/CWen001) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3ACWen001)
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+    - Helped other sprinters with `git` issues at SciPy 2019.
+- [@kurtispinkney](https://github.com/kurtispinkney) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3Akurtispinkney)
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+- [@keoghdata](https://github.com/keoghdata) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3Akeoghdata)
+- [@cjmayers](https://github.com/cjmayers) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3Acjmayers)
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+- [@gaworecki5](https://github.com/gaworecki5) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3Agaworecki5)
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+- [@MinchinWeb](https://github.com/MinchinWeb) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/issues?q=is%3Aclosed+mentions%3AMinchinWeb)
+- [@BaritoneBeard](https://github.com/BaritoneBeard) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/issues?q=is%3Aclosed+mentions%3ABaritoneBeard)
+- [@Sousa8697](https://github.com/Sousa8697) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/issues?q=is%3Aclosed+mentions%3ASousa8697)
+- [@MollyCroke](https://github.com/MollyCroke) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/issues?q=is%3Aclosed+mentions%3AMollyCroke)
+- [@ericclessantostv](https://github.com/ericlessantostv) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/issues?q=is%3Aclosed+mentions%3Aericclessantostv)
+- [@fireddd](https://github.com/fireddd) |  [contributions](https://github.com/pyjanitor-devs/pyjanitor/issues?q=is%3Aclosed+mentions%3Afireddd)
+- [@Zeroto521](https://github.com/Zeroto521) | [contributions](https://github.com/pyjanitor-devs/pyjanitor/pulls?utf8=%E2%9C%93&q=is%3Aclosed+mentions%3Zeroto521)