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pathlib.Path.move() consumes too much disk space #132566

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pathlib.Path.move() consumes too much disk space#132566
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performancePerformance or resource usagestdlibStandard Library Python modules in the Lib/ directorytopic-pathlibtype-bugAn unexpected behavior, bug, or error

Description

@barneygale
barneygale
opened on Apr 15, 2025

Bug report

Bug description:

pathlib.Path.move() and move_into() (new in 3.14+) currently perform a complete copy before deleting any source files, which can consume a lot of disk space. It might be better if they removed source files/directories as the copy operation progresses.

CPython versions tested on:

CPython main branch

Operating systems tested on:

No response

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Activity

  1. barneygale
    added
    performancePerformance or resource usage
    topic-pathlib
    type-bugAn unexpected behavior, bug, or error
    on Apr 15, 2025
  2. barneygale
    added 2 commits that reference this issue on Apr 15, 2025

    pythonGH-132566: Add `pathlib.Path.info.is_junction()`

    20f1bfa

    pythonGH-132566: Add `pathlib.Path.info.is_junction()`

    2c8ec99
  3. picnixz
    added
    stdlibStandard Library Python modules in the Lib/ directory
    on Apr 17, 2025

  4. StanFromIreland commented on Apr 18, 2025

    @StanFromIreland
    StanFromIreland
    on Apr 18, 2025 · Hidden as resolved

  5. picnixz commented on Apr 18, 2025

    @picnixz
    picnixz
    on Apr 18, 2025 · Hidden as resolved
  6. barneygale
    added a commit that references this issue on May 10, 2025

    pythonGH-132566: Progressively delete files in `pathlib.Path.move()`

    94beaaa
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    performancePerformance or resource usagestdlibStandard Library Python modules in the Lib/ directorytopic-pathlibtype-bugAn unexpected behavior, bug, or error

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