first commit

.cargo/config.toml

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+[env]
+# Tune jemalloc (https://github.com/pola-rs/polars/issues/18088).
+JEMALLOC_SYS_WITH_MALLOC_CONF = "dirty_decay_ms:500,muzzy_decay_ms:-1"

.gitattributes

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+*.ipynb linguist-documentation

.github/CODEOWNERS

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+*  @ritchie46 @c-peters
+
+/crates/  @ritchie46 @orlp @c-peters
+/crates/polars-sql/  @ritchie46 @orlp @c-peters @alexander-beedie
+/crates/polars-parquet/  @ritchie46 @orlp @c-peters @coastalwhite
+/crates/polars-time/  @ritchie46 @orlp @c-peters @MarcoGorelli
+/py-polars/  @ritchie46 @c-peters @alexander-beedie @MarcoGorelli @reswqa
+/py-polars/src/lazyframe/visit.rs  @ritchie46 @c-peters @alexander-beedie @MarcoGorelli @reswqa @wence-
+/py-polars/src/lazyframe/visitor/  @ritchie46 @c-peters @alexander-beedie @MarcoGorelli @reswqa @wence-

.github/CODE_OF_CONDUCT.md

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+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to make participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, sex characteristics, gender identity and expression,
+level of experience, education, socio-economic status, nationality, personal
+appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+- Using welcoming and inclusive language
+- Being respectful of differing viewpoints and experiences
+- Gracefully accepting constructive criticism
+- Focusing on what is best for the community
+- Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+- The use of sexualized language or imagery and unwelcome sexual attention or
+  advances
+- Trolling, insulting/derogatory comments, and personal or political attacks
+- Public or private harassment
+- Publishing others' private information, such as a physical or electronic
+  address, without explicit permission
+- Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct, or to ban temporarily or
+permanently any contributor for other behaviors that they deem inappropriate,
+threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies within all project spaces, and it also applies when
+an individual is representing the project or its community in public spaces.
+Examples of representing a project or community include using an official
+project e-mail address, posting via an official social media account, or acting
+as an appointed representative at an online or offline event. Representation of
+a project may be further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported by contacting the project team at [email protected]. All
+complaints will be reviewed and investigated and will result in a response that
+is deemed necessary and appropriate to the circumstances. The project team is
+obligated to maintain confidentiality with regard to the reporter of an incident.
+Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
+available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+
+[homepage]: https://www.contributor-covenant.org
+
+For answers to common questions about this code of conduct, see
+https://www.contributor-covenant.org/faq

.github/FUNDING.yml

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+github: ritchie46

.github/ISSUE_TEMPLATE/bug_report_python.yml

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+name: '🐞 Bug report - Python'
+description: Report an issue with Python Polars.
+labels: [bug, needs triage, python]
+
+body:
+  - type: checkboxes
+    id: checks
+    attributes:
+      label: Checks
+      options:
+        - label: I have checked that this issue has not already been reported.
+          required: true
+        - label: I have confirmed this bug exists on the [latest version](https://pypi.org/project/polars/) of Polars.
+          required: true
+
+  - type: textarea
+    id: example
+    attributes:
+      label: Reproducible example
+      description: >
+        Please follow [this guide](https://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports) on how to
+        provide a minimal, copy-pasteable example. Include the (wrong) output if applicable.
+      value: |
+        ```python
+
+        ```
+    validations:
+      required: true
+
+  - type: textarea
+    id: logs
+    attributes:
+      label: Log output
+      description: >
+        Set the environment variable ``POLARS_VERBOSE=1`` before running the query.
+        Paste the output of ``stderr`` here.
+      render: shell
+
+  - type: textarea
+    id: problem
+    attributes:
+      label: Issue description
+      description: >
+        Provide any additional information you think might be relevant.
+    validations:
+      required: true
+
+  - type: textarea
+    id: expected-behavior
+    attributes:
+      label: Expected behavior
+      description: >
+        Describe or show a code example of the expected behavior.
+    validations:
+      required: true
+
+  - type: textarea
+    id: version
+    attributes:
+      label: Installed versions
+      description: >
+        Paste the output of ``pl.show_versions()``
+      value: |
+        <details>
+
+        ```
+        Replace this line with the output of pl.show_versions(). Leave the backticks in place.
+        ```
+
+        </details>
+    validations:
+      required: true
+

.github/ISSUE_TEMPLATE/bug_report_rust.yml

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+name: '🐞 Bug report - Rust'
+description: Report an issue with Rust Polars.
+labels: [bug, needs triage, rust]
+
+body:
+  - type: checkboxes
+    id: checks
+    attributes:
+      label: Checks
+      options:
+        - label: I have checked that this issue has not already been reported.
+          required: true
+        - label: I have confirmed this bug exists on the [latest version](https://crates.io/crates/polars) of Polars.
+          required: true
+
+  - type: textarea
+    id: example
+    attributes:
+      label: Reproducible example
+      description: >
+        Please follow [this guide](https://matthewrocklin.com/blog/work/2018/02/28/minimal-bug-reports) on how to
+        provide a minimal, copy-pasteable example. Include the (wrong) output if applicable.
+      value: |
+        ```rust
+
+        ```
+    validations:
+      required: true
+
+  - type: textarea
+    id: logs
+    attributes:
+      label: Log output
+      description: >
+        Set the environment variable ``POLARS_VERBOSE=1`` before running the query.
+        Paste the output of ``stderr`` here.
+      render: shell
+
+  - type: textarea
+    id: problem
+    attributes:
+      label: Issue description
+      description: >
+        Provide any additional information you think might be relevant.
+    validations:
+      required: true
+
+  - type: textarea
+    id: expected-behavior
+    attributes:
+      label: Expected behavior
+      description: >
+        Describe or show a code example of the expected behavior.
+    validations:
+      required: true
+
+  - type: textarea
+    id: version
+    attributes:
+      label: Installed versions
+      description: >
+        List the feature gates you used.
+      value: |
+        <details>
+
+        Replace this line with a list of feature gates
+
+        </details>
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/config.yml

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+# Ref: https://help.github.com/en/github/building-a-strong-community/configuring-issue-templates-for-your-repository#configuring-the-template-chooser
+blank_issues_enabled: true
+contact_links:
+- name: '❓ Question - Python'
+  url: https://stackoverflow.com/questions/ask?tags=python-polars%20python
+  about: |
+    Ask a question about Python Polars on Stack Overflow.
+- name: '❓ Question - Rust'
+  url: https://stackoverflow.com/questions/ask?tags=rust-polars%20rust
+  about: |
+    Ask a question about Rust Polars on Stack Overflow.
+- name: '💬 Discord server'
+  url: https://discord.gg/4UfP5cfBE7
+  about: |
+    Chat with the community and Polars maintainers about the usage and development of the project.

.github/ISSUE_TEMPLATE/documentation.yml

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+name: '📖 Documentation improvement'
+description: Report an issue with the documentation.
+labels: [documentation]
+
+body:
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: >
+        Describe the issue with the documentation and how it can be fixed or improved.
+    validations:
+      required: true
+
+  - type: input
+    id: link
+    attributes:
+      label: Link
+      description: >
+        Provide a link to the existing documentation, if applicable.
+      placeholder: ex. https://docs.pola.rs/api/python/dev/...
+    validations:
+      required: false

.github/ISSUE_TEMPLATE/feature_request.yml

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+name: '✨ Feature request'
+description: Suggest a new feature or enhancement for Polars.
+labels: [enhancement]
+
+body:
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: >
+        Describe the feature or enhancement and explain why it should be implemented.
+        Include a code example if applicable.
+    validations:
+      required: true

.github/codecov.yml

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+coverage:
+  status:
+    project: off
+    patch: off
+comment:
+  require_changes: true
+ignore:
+  - crates/polars-arrow/src/io/flight/*.rs
+  - crates/polars-arrow/src/io/ipc/append/*.rs
+  - crates/polars-arrow/src/io/ipc/read/array/union.rs
+  - crates/polars-arrow/src/io/ipc/read/array/map.rs
+  - crates/polars-arrow/src/io/ipc/read/array/binary.rs
+  - crates/polars-arrow/src/io/ipc/read/array/fixed_size_binary.rs
+  - crates/polars-arrow/src/io/ipc/read/array/null.rs
+  - crates/polars-arrow/src/io/ipc/write/serialize/fixed_size_binary.rs
+  - crates/polars-arrow/src/io/ipc/write/serialize/union.rs
+  - crates/polars-arrow/src/io/ipc/write/serialize/map.rs
+  - crates/polars-arrow/src/array/union/*.rs
+  - crates/polars-arrow/src/array/map/*.rs
+  - crates/polars-arrow/src/array/fixed_size_binary/*.rs

.github/dependabot.yml

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+version: 2
+updates:
+  # GitHub Actions
+  - package-ecosystem: github-actions
+    directory: '/'
+    schedule:
+      interval: monthly
+    ignore:
+      - dependency-name: '*'
+        update-types: ['version-update:semver-patch']
+    commit-message:
+      prefix: ci
+    labels: ['skip changelog']
+
+  # Rust Polars
+  - package-ecosystem: cargo
+    directory: '/'
+    schedule:
+      interval: monthly
+    ignore:
+      - dependency-name: '*'
+        update-types: ['version-update:semver-patch']
+    commit-message:
+      prefix: build(rust)
+      prefix-development: chore(rust)
+    labels: ['skip changelog']
+
+  # Python Polars
+  - package-ecosystem: pip
+    directory: py-polars
+    schedule:
+      interval: monthly
+    ignore:
+      - dependency-name: '*'
+        update-types: ['version-update:semver-patch']
+    commit-message:
+      prefix: chore(python)
+    labels: ['skip changelog']
+
+  - package-ecosystem: cargo
+    directory: py-polars
+    schedule:
+      interval: monthly
+    ignore:
+      - dependency-name: '*'
+        update-types: ['version-update:semver-patch']
+    commit-message:
+      prefix: build(python)
+      prefix-development: chore(python)
+    labels: ['skip changelog']
+
+  # Documentation
+  - package-ecosystem: pip
+    directory: docs
+    schedule:
+      interval: monthly
+    ignore:
+      - dependency-name: '*'
+        update-types: ['version-update:semver-patch']
+    commit-message:
+      prefix: chore(python)
+    labels: ['skip changelog']

.github/pr-title-checker-config.json

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+{
+  "LABEL": {
+    "name": "title needs formatting",
+    "color": "FF0000"
+  },
+  "CHECKS": {
+    "regexp": "^(build|chore|ci|depr|docs|feat|fix|perf|refactor|release|test)(\\((python|rust)\\!?(,(python|rust)\\!?)?\\))?\\!?\\: [A-Z].*[^\\.\\!\\?,… ]$",
+    "ignoreLabels": ["skip changelog"]
+  },
+  "MESSAGES": {
+    "success": "PR title OK!",
+    "failure": "Invalid PR title! Please update according to the contributing guidelines: https://docs.pola.rs/development/contributing/#pull-requests",
+    "notice": ""
+  }
+}