CI/DOC: replace master -> main branch (#45336)

.github/ISSUE_TEMPLATE/bug_report.yaml

@@ -17,7 +17,7 @@ body:
             [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
           required: true
         - label: >
-            I have confirmed this bug exists on the master branch of pandas.
+            I have confirmed this bug exists on the main branch of pandas.
   - type: textarea
     id: example
     attributes:

.github/ISSUE_TEMPLATE/documentation_improvement.yaml

@@ -10,7 +10,7 @@ body:
       options:
         - label: >
             I have checked that the issue still exists on the latest versions of the docs
-            on `master` [here](https://pandas.pydata.org/docs/dev/)
+            on `main` [here](https://pandas.pydata.org/docs/dev/)
           required: true
   - type: textarea
     id: location

.github/ISSUE_TEMPLATE/performance_issue.yaml

@@ -17,7 +17,7 @@ body:
             [latest version](https://pandas.pydata.org/docs/whatsnew/index.html) of pandas.
           required: true
         - label: >
-            I have confirmed this issue exists on the master branch of pandas.
+            I have confirmed this issue exists on the main branch of pandas.
   - type: textarea
     id: example
     attributes:

.github/workflows/asv-bot.yml

@@ -59,9 +59,9 @@ jobs:
           git remote add upstream https://github.com/pandas-dev/pandas.git
           git fetch upstream
           asv machine --yes
-          asv continuous -f 1.1 -b $REGEX upstream/master HEAD
+          asv continuous -f 1.1 -b $REGEX upstream/main HEAD
           echo 'BENCH_OUTPUT<<EOF' >> $GITHUB_ENV
-          asv compare -f 1.1 upstream/master HEAD >> $GITHUB_ENV
+          asv compare -f 1.1 upstream/main HEAD >> $GITHUB_ENV
           echo 'EOF' >> $GITHUB_ENV
           echo "REGEX=$REGEX" >> $GITHUB_ENV
 

.github/workflows/code-checks.yml

@@ -3,11 +3,11 @@ name: Code Checks
 on:
   push:
     branches:
-      - master
+      - main
       - 1.4.x
   pull_request:
     branches:
-      - master
+      - main
       - 1.4.x
 
 env:

.github/workflows/comment_bot.yml

@@ -29,7 +29,7 @@ jobs:
       - name: Install-pre-commit
         run: python -m pip install --upgrade pre-commit
       - name: Run pre-commit
-        run: pre-commit run --from-ref=origin/master --to-ref=HEAD --all-files || (exit 0)
+        run: pre-commit run --from-ref=origin/main --to-ref=HEAD --all-files || (exit 0)
       - name: Commit results
         run: |
           git config user.name "$(git log -1 --pretty=format:%an)"

.github/workflows/datamanger.yml

@@ -3,11 +3,11 @@ name: Data Manager
 on:
   push:
     branches:
-      - master
+      - main
       - 1.4.x
   pull_request:
     branches:
-      - master
+      - main
       - 1.4.x
 
 env:

.github/workflows/docbuild-and-upload.yml

@@ -3,11 +3,11 @@ name: Doc Build and Upload
 on:
   push:
     branches:
-      - master
+      - main
       - 1.4.x
   pull_request:
     branches:
-      - master
+      - main
       - 1.4.x
 
 env:
@@ -53,18 +53,18 @@ jobs:
         echo "${{ secrets.server_ssh_key }}" > ~/.ssh/id_rsa
         chmod 600 ~/.ssh/id_rsa
         echo "${{ secrets.server_ip }} ecdsa-sha2-nistp256 AAAAE2VjZHNhLXNoYTItbmlzdHAyNTYAAAAIbmlzdHAyNTYAAABBBE1Kkopomm7FHG5enATf7SgnpICZ4W2bw+Ho+afqin+w7sMcrsa0je7sbztFAV8YchDkiBKnWTG4cRT+KZgZCaY=" > ~/.ssh/known_hosts
-      if: ${{github.event_name == 'push' && github.ref == 'refs/heads/master'}}
+      if: ${{github.event_name == 'push' && github.ref == 'refs/heads/main'}}
 
     - name: Copy cheatsheets into site directory
       run: cp doc/cheatsheet/Pandas_Cheat_Sheet* web/build/
 
     - name: Upload web
       run: rsync -az --delete --exclude='pandas-docs' --exclude='docs' web/build/ docs@${{ secrets.server_ip }}:/usr/share/nginx/pandas
-      if: ${{github.event_name == 'push' && github.ref == 'refs/heads/master'}}
+      if: ${{github.event_name == 'push' && github.ref == 'refs/heads/main'}}
 
     - name: Upload dev docs
       run: rsync -az --delete doc/build/html/ docs@${{ secrets.server_ip }}:/usr/share/nginx/pandas/pandas-docs/dev
-      if: ${{github.event_name == 'push' && github.ref == 'refs/heads/master'}}
+      if: ${{github.event_name == 'push' && github.ref == 'refs/heads/main'}}
 
     - name: Move docs into site directory
       run: mv doc/build/html web/build/docs

.github/workflows/posix.yml

@@ -3,11 +3,11 @@ name: Posix
 on:
   push:
     branches:
-      - master
+      - main
       - 1.4.x
   pull_request:
     branches:
-      - master
+      - main
       - 1.4.x
     paths-ignore:
       - "doc/**"

.github/workflows/python-dev.yml

@@ -3,11 +3,11 @@ name: Python Dev
 on:
   push:
     branches:
-      - master
+      - main
       - 1.4.x
   pull_request:
     branches:
-      - master
+      - main
       - 1.4.x
     paths-ignore:
       - "doc/**"

.github/workflows/sdist.yml

@@ -3,11 +3,11 @@ name: sdist
 on:
   push:
     branches:
-      - master
+      - main
       - 1.4.x
   pull_request:
     branches:
-      - master
+      - main
       - 1.4.x
     paths-ignore:
       - "doc/**"

Dockerfile

@@ -28,7 +28,7 @@ RUN mkdir "$pandas_home" \
     && git clone "https://github.com/$gh_username/pandas.git" "$pandas_home" \
     && cd "$pandas_home" \
     && git remote add upstream "https://github.com/pandas-dev/pandas.git" \
-    && git pull upstream master
+    && git pull upstream main
 
 # Because it is surprisingly difficult to activate a conda environment inside a DockerFile
 # (from personal experience and per https://github.com/ContinuumIO/docker-images/issues/89),

Makefile

@@ -12,7 +12,7 @@ build: clean_pyc
 	python setup.py build_ext
 
 lint-diff:
-	git diff upstream/master --name-only -- "*.py" | xargs flake8
+	git diff upstream/main --name-only -- "*.py" | xargs flake8
 
 black:
 	black .

README.md

@@ -9,9 +9,9 @@
 [![Conda Latest Release](https://anaconda.org/conda-forge/pandas/badges/version.svg)](https://anaconda.org/anaconda/pandas/)
 [![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.3509134.svg)](https://doi.org/10.5281/zenodo.3509134)
 [![Package Status](https://img.shields.io/pypi/status/pandas.svg)](https://pypi.org/project/pandas/)
-[![License](https://img.shields.io/pypi/l/pandas.svg)](https://github.com/pandas-dev/pandas/blob/master/LICENSE)
-[![Azure Build Status](https://dev.azure.com/pandas-dev/pandas/_apis/build/status/pandas-dev.pandas?branch=master)](https://dev.azure.com/pandas-dev/pandas/_build/latest?definitionId=1&branch=master)
-[![Coverage](https://codecov.io/github/pandas-dev/pandas/coverage.svg?branch=master)](https://codecov.io/gh/pandas-dev/pandas)
+[![License](https://img.shields.io/pypi/l/pandas.svg)](https://github.com/pandas-dev/pandas/blob/main/LICENSE)
+[![Azure Build Status](https://dev.azure.com/pandas-dev/pandas/_apis/build/status/pandas-dev.pandas?branch=main)](https://dev.azure.com/pandas-dev/pandas/_build/latest?definitionId=1&branch=main)
+[![Coverage](https://codecov.io/github/pandas-dev/pandas/coverage.svg?branch=main)](https://codecov.io/gh/pandas-dev/pandas)
 [![Downloads](https://static.pepy.tech/personalized-badge/pandas?period=month&units=international_system&left_color=black&right_color=orange&left_text=PyPI%20downloads%20per%20month)](https://pepy.tech/project/pandas)
 [![Gitter](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/pydata/pandas)
 [![Powered by NumFOCUS](https://img.shields.io/badge/powered%20by-NumFOCUS-orange.svg?style=flat&colorA=E1523D&colorB=007D8A)](https://numfocus.org)
@@ -170,4 +170,4 @@ Or maybe through using pandas you have an idea of your own or are looking for so
 
 Feel free to ask questions on the [mailing list](https://groups.google.com/forum/?fromgroups#!forum/pydata) or on [Gitter](https://gitter.im/pydata/pandas).
 
-As contributors and maintainers to this project, you are expected to abide by pandas' code of conduct. More information can be found at: [Contributor Code of Conduct](https://github.com/pandas-dev/pandas/blob/master/.github/CODE_OF_CONDUCT.md)
+As contributors and maintainers to this project, you are expected to abide by pandas' code of conduct. More information can be found at: [Contributor Code of Conduct](https://github.com/pandas-dev/pandas/blob/main/.github/CODE_OF_CONDUCT.md)

azure-pipelines.yml

@@ -2,7 +2,7 @@
 trigger:
   branches:
     include:
-    - master
+    - main
     - 1.4.x
   paths:
     exclude:
@@ -12,7 +12,7 @@ pr:
   autoCancel: true
   branches:
     include:
-    - master
+    - main
     - 1.4.x
 
 variables:

codecov.yml

@@ -1,5 +1,5 @@
 codecov:
-  branch: master
+  branch: main
   notify:
     after_n_builds: 10
 comment: false

doc/source/conf.py

@@ -651,7 +651,7 @@ def linkcode_resolve(domain, info):
     fn = os.path.relpath(fn, start=os.path.dirname(pandas.__file__))
 
     if "+" in pandas.__version__:
-        return f"https://github.com/pandas-dev/pandas/blob/master/pandas/{fn}{linespec}"
+        return f"https://github.com/pandas-dev/pandas/blob/main/pandas/{fn}{linespec}"
     else:
         return (
             f"https://github.com/pandas-dev/pandas/blob/"

doc/source/development/contributing.rst

@@ -59,7 +59,7 @@ will allow others to reproduce the bug and provide insight into fixing. See
 `this blogpost <https://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports>`_
 for tips on writing a good bug report.
 
-Trying the bug-producing code out on the *master* branch is often a worthwhile exercise
+Trying the bug-producing code out on the *main* branch is often a worthwhile exercise
 to confirm the bug still exists. It is also worth searching existing bug reports and pull requests
 to see if the issue has already been reported and/or fixed.
 
@@ -143,7 +143,7 @@ as the version number cannot be computed anymore.
 Creating a branch
 -----------------
 
-You want your master branch to reflect only production-ready code, so create a
+You want your main branch to reflect only production-ready code, so create a
 feature branch for making your changes. For example::
 
     git branch shiny-new-feature
@@ -158,14 +158,14 @@ changes in this branch specific to one bug or feature so it is clear
 what the branch brings to pandas. You can have many shiny-new-features
 and switch in between them using the git checkout command.
 
-When creating this branch, make sure your master branch is up to date with
-the latest upstream master version. To update your local master branch, you
+When creating this branch, make sure your main branch is up to date with
+the latest upstream main version. To update your local main branch, you
 can do::
 
-    git checkout master
-    git pull upstream master --ff-only
+    git checkout main
+    git pull upstream main --ff-only
 
-When you want to update the feature branch with changes in master after
+When you want to update the feature branch with changes in main after
 you created the branch, check the section on
 :ref:`updating a PR <contributing.update-pr>`.
 
@@ -256,16 +256,16 @@ double check your branch changes against the branch it was based on:
 #. Navigate to your repository on GitHub -- https://github.com/your-user-name/pandas
 #. Click on ``Branches``
 #. Click on the ``Compare`` button for your feature branch
-#. Select the ``base`` and ``compare`` branches, if necessary. This will be ``master`` and
+#. Select the ``base`` and ``compare`` branches, if necessary. This will be ``main`` and
    ``shiny-new-feature``, respectively.
 
 Finally, make the pull request
 ------------------------------
 
 If everything looks good, you are ready to make a pull request.  A pull request is how
 code from a local repository becomes available to the GitHub community and can be looked
-at and eventually merged into the master version.  This pull request and its associated
-changes will eventually be committed to the master branch and available in the next
+at and eventually merged into the main version.  This pull request and its associated
+changes will eventually be committed to the main branch and available in the next
 release.  To submit a pull request:
 
 #. Navigate to your repository on GitHub
@@ -294,14 +294,14 @@ This will automatically update your pull request with the latest code and restar
 :any:`Continuous Integration <contributing.ci>` tests.
 
 Another reason you might need to update your pull request is to solve conflicts
-with changes that have been merged into the master branch since you opened your
+with changes that have been merged into the main branch since you opened your
 pull request.
 
-To do this, you need to "merge upstream master" in your branch::
+To do this, you need to "merge upstream main" in your branch::
 
     git checkout shiny-new-feature
     git fetch upstream
-    git merge upstream/master
+    git merge upstream/main
 
 If there are no conflicts (or they could be fixed automatically), a file with a
 default commit message will open, and you can simply save and quit this file.
@@ -313,7 +313,7 @@ Once the conflicts are merged and the files where the conflicts were solved are
 added, you can run ``git commit`` to save those fixes.
 
 If you have uncommitted changes at the moment you want to update the branch with
-master, you will need to ``stash`` them prior to updating (see the
+main, you will need to ``stash`` them prior to updating (see the
 `stash docs <https://git-scm.com/book/en/v2/Git-Tools-Stashing-and-Cleaning>`__).
 This will effectively store your changes and they can be reapplied after updating.
 
@@ -342,12 +342,12 @@ Delete your merged branch (optional)
 ------------------------------------
 
 Once your feature branch is accepted into upstream, you'll probably want to get rid of
-the branch. First, merge upstream master into your branch so git knows it is safe to
+the branch. First, merge upstream main into your branch so git knows it is safe to
 delete your branch::
 
     git fetch upstream
-    git checkout master
-    git merge upstream/master
+    git checkout main
+    git merge upstream/main
 
 Then you can do::