plotly/dash
Oct 2025 – Dec 2025
3 Months active
Languages Used
JavaScriptPython
Technical Skills
Reactfront end developmenttestingPythoncode formattingfull stack development
Letícia Barbosa Neves
PROFILE
Letícia Barbosa Neves
Leticia Tadanile enhanced the plotly/dash repository by developing advanced folder upload capabilities for the Upload component, enabling users to select and upload entire folders while preserving directory structure. She implemented recursive traversal using the File System Access API and introduced new props to support flexible file and folder selection modes, addressing cross-browser compatibility and improving user experience for bulk data ingestion. Her work included robust integration testing, code formatting to Black standards, and careful attention to backward compatibility. Leveraging Python, React, and front end development skills, Leticia delivered features that streamline large-scale uploads and reduce friction in Dash applications.
Overall Statistics
Feature vs Bugs
75%Features
Repository Contributions
5Total
Bugs
1
Commits
5
Features
3
Lines of code
362,114
Activity Months3
Your Network
41 peopleShared Repositories
41
Work History
December 2025
2 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for plotly/dash: Overview: Delivered a focused enhancement to the Upload component to improve file and folder selection UX, address cross-browser issues, and strengthen test coverage. This work directly improves end-user experience for content-heavy dashboards and reduces support risk by making folder and file uploads more intuitive and reliable. Key deliverables: - Implemented a new prop enable_folder_selection on the Upload component to support folder-only or file-only selection modes, resolving issues with accept and webkitdirectory when multiple=True. - Allowed creation of distinct Upload components for files vs folders to improve flexibility in file management and UI composition. - Updated end-to-end integration tests to cover the enable_folder_selection API, including tests for folder uploads, multiple files without folder selection, and single-file uploads. Impact and business value: - Improves user onboarding and throughput for bulk uploads in dashboards and apps, reducing friction and potential errors during file/folder selection. - Increases test coverage and API clarity, lowering regression risk and facilitating future enhancements. Technologies and skills demonstrated: - React-like component design patterns in Dash, with prop-driven behavior for file/folder selection. - Handling of webkitdirectory interactions, drag-and-drop support, and cross-browser considerations. - Integration testing practices, test naming conventions, and API validation.
2 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for plotly/dash: Overview: Delivered a focused enhancement to the Upload component to improve file and folder selection UX, address cross-browser issues, and strengthen test coverage. This work directly improves end-user experience for content-heavy dashboards and reduces support risk by making folder and file uploads more intuitive and reliable. Key deliverables: - Implemented a new prop enable_folder_selection on the Upload component to support folder-only or file-only selection modes, resolving issues with accept and webkitdirectory when multiple=True. - Allowed creation of distinct Upload components for files vs folders to improve flexibility in file management and UI composition. - Updated end-to-end integration tests to cover the enable_folder_selection API, including tests for folder uploads, multiple files without folder selection, and single-file uploads. Impact and business value: - Improves user onboarding and throughput for bulk uploads in dashboards and apps, reducing friction and potential errors during file/folder selection. - Increases test coverage and API clarity, lowering regression risk and facilitating future enhancements. Technologies and skills demonstrated: - React-like component design patterns in Dash, with prop-driven behavior for file/folder selection. - Handling of webkitdirectory interactions, drag-and-drop support, and cross-browser considerations. - Integration testing practices, test naming conventions, and API validation.
December 2025
November 2025
2 Commits • 1 Features
Nov 1, 2025November 2025 performance summary for plotly/dash: Delivered a folder upload enhancement for DCC.Upload that enables uploading entire folders with preserved hierarchy and no API changes required for apps using multiple=True. Implemented end-to-end folder handling with a custom data transfer path (getDataTransferItems) and recursive traversal (traverseFileTree), plus browser support through webkitdirectory/directory/mozdirectory attributes. Added robust accept prop filtering for folder uploads (extensions, MIME types, wildcards) to improve filtering accuracy. Performed linting/formatting cleanup for folder upload tests to Black standards and refreshed integration tests to increase reliability. Overall impact: frictionless, scalable folder-based uploads across Dash apps; improved test reliability and CI stability. Technologies/skills demonstrated: browser dataTransfer APIs, recursive file traversal, dimensioned file filtering, Python/CI test discipline, Black formatter adherence.
November 2025
2 Commits • 1 Features
Nov 1, 2025November 2025 performance summary for plotly/dash: Delivered a folder upload enhancement for DCC.Upload that enables uploading entire folders with preserved hierarchy and no API changes required for apps using multiple=True. Implemented end-to-end folder handling with a custom data transfer path (getDataTransferItems) and recursive traversal (traverseFileTree), plus browser support through webkitdirectory/directory/mozdirectory attributes. Added robust accept prop filtering for folder uploads (extensions, MIME types, wildcards) to improve filtering accuracy. Performed linting/formatting cleanup for folder upload tests to Black standards and refreshed integration tests to increase reliability. Overall impact: frictionless, scalable folder-based uploads across Dash apps; improved test reliability and CI stability. Technologies/skills demonstrated: browser dataTransfer APIs, recursive file traversal, dimensioned file filtering, Python/CI test discipline, Black formatter adherence.
October 2025
1 Commits • 1 Features
Oct 1, 2025October 2025: Delivered Folder Upload Support for dcc.Upload in plotly/dash, introducing a new useFsAccessApi prop to enable folder selection and enabling both click-to-select and drag-and-drop for folders. Implemented recursive traversal of folder structures using the File System Access API, preserved folder hierarchy in uploaded filenames, and ensured backward compatibility by defaulting useFsAccessApi to false. Added comprehensive integration tests validating folder upload flows and compatibility with existing file upload methods. This work improves user productivity for batch data uploads, reduces manual workarounds, and strengthens Dash's data ingestion capabilities. Commit 7a25fa90b836615ccabf3457ce361690f0a934d5 closes #3464.
1 Commits • 1 Features
Oct 1, 2025October 2025: Delivered Folder Upload Support for dcc.Upload in plotly/dash, introducing a new useFsAccessApi prop to enable folder selection and enabling both click-to-select and drag-and-drop for folders. Implemented recursive traversal of folder structures using the File System Access API, preserved folder hierarchy in uploaded filenames, and ensured backward compatibility by defaulting useFsAccessApi to false. Added comprehensive integration tests validating folder upload flows and compatibility with existing file upload methods. This work improves user productivity for batch data uploads, reduces manual workarounds, and strengthens Dash's data ingestion capabilities. Commit 7a25fa90b836615ccabf3457ce361690f0a934d5 closes #3464.
October 2025
Activity
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Quality Metrics
Correctness100.0%
Maintainability84.0%
Architecture92.0%
Performance84.0%
AI Usage28.0%
Skills & Technologies
Programming Languages
JavaScriptPython
Technical Skills
API developmentDash frameworkPythonReactcode formattingfront end developmentfull stack developmenttesting
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