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GeezerVison is showing github.com — Pasting large blocks of code into the console causes the code to be truncated · Issue #137979 · python/cpython

Pasting large blocks of code into the console causes the code to be truncated #137979

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Pasting large blocks of code into the console causes the code to be truncated#137979
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stdlibStandard Library Python modules in the Lib/ directoryStandard Library Python modules in the Lib/ directorytopic-replRelated to the interactive shellRelated to the interactive shelltype-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

Description

@MengAiDev
MengAiDev
opened on Aug 20, 2025
Issue body actions

Bug report

Bug description:

  1. build python and start python shell
  2. paste a lot of code to the console, I use code from JSON (output) support for sqlite3 #137974
  3. you will find the code broken, like this two pictures
Image Image

CPython versions tested on:

CPython main branch

Operating systems tested on:

Linux

Activity

  1. MengAiDev
    added
    type-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error
    on Aug 20, 2025

  2. StanFromIreland commented on Aug 20, 2025

    @StanFromIreland
    StanFromIreland
    on Aug 20, 2025
    Member
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    Does this happen after you zoom out or scroll up? There are is a duplicate report of that, #129220.

  3. StanFromIreland
    added
    pendingThe issue will be closed if no feedback is providedThe issue will be closed if no feedback is provided
    topic-replRelated to the interactive shellRelated to the interactive shell
    stdlibStandard Library Python modules in the Lib/ directoryStandard Library Python modules in the Lib/ directory
    on Aug 20, 2025

  4. MengAiDev commented on Aug 20, 2025

    @MengAiDev
    MengAiDev
    on Aug 20, 2025
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    @StanFromIreland Not, I just paste it and I don't do anything. I tried Bash shell in vscode and Jupyter notebook.

  5. StanFromIreland commented on Aug 21, 2025

    @StanFromIreland
    StanFromIreland
    on Aug 21, 2025
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    I see, that is interesting. I can not reproduce, are you sure you didn’t scroll up? What terminal are you using?

  6. StanFromIreland
    removed
    pendingThe issue will be closed if no feedback is providedThe issue will be closed if no feedback is provided
    on Aug 21, 2025

  7. MengAiDev commented on Aug 30, 2025

    @MengAiDev
    MengAiDev
    on Aug 30, 2025
    Author
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    @StanFromIreland sorry, i haven't seen the message, I use the bash shell in jupyter notebook terminal and the built in terminal of vscode. I tried fiah shell, but the bug still. I use the modelscope notebook, you can see it at modelscope.cn

  8. StanFromIreland
    closed this as a duplicateof Python 3.14 REPL blanks links above terminal rows when pasting #135055 on May 30, 2026
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    stdlibStandard Library Python modules in the Lib/ directoryStandard Library Python modules in the Lib/ directorytopic-replRelated to the interactive shellRelated to the interactive shelltype-bugAn unexpected behavior, bug, or errorAn unexpected behavior, bug, or error

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