3 Easy Ways to Undo Changes in Google Colab

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An easy-to-follow guide to revert changes and undo actions in Google Colab
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Did you accidentally delete a cell in Google Colab that contained important code? Or was an earlier version more like what you wanted? This wikiHow article teaches you how to undo a cell change, restore deleted cells using quick keyboard shortcuts, and how to revert your workbook back to a previous version in Google Colab. Colab keyboard shortcuts are different than those used in Jupyter notebooks , but we'll show you the right way to use them.

Things You Should Know

  • To undo a deleted cell on Windows, press "Ctrl + M" and press "Z."
  • To undo a deleted cell on Mac, press "Cmd + M" and press "Z."
  • If you want to restore a previous version of the Colab, go to "File > Revision History > â‹® > Restore revision."
Section 1 of 3:

Using a Keyboard Shortcut

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  1. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/f\/fb\/Undo-in-Google-Colab-Step-1.jpg\/v4-460px-Undo-in-Google-Colab-Step-1.jpg","bigUrl":"\/images\/thumb\/f\/fb\/Undo-in-Google-Colab-Step-1.jpg\/v4-728px-Undo-in-Google-Colab-Step-1.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><p>License: <a target=\"_blank\" rel=\"nofollow noreferrer noopener\" class=\"external text\" href=\"https:\/\/en.wikipedia.org\/wiki\/Fair_use\">Fair Use<\/a> (screenshot)<br>\n<\/p><\/div>"}
    This quick keyboard shortcut will undo the last action, such as restoring the content of a cell you deleted.
    • To undo with the shortcut on Windows, press Control + M + Z at the same time.
    • To use the shortcut on a Mac, press Command + M + Z at the same time.
    • To redo your last undo, use Control + Shift + Y (PC) or Command + Shift + Y (Mac). [1]
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Section 2 of 3:

Using the Edit Menu

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  1. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/2\/27\/Undo-in-Google-Colab-Step-2.jpg\/v4-460px-Undo-in-Google-Colab-Step-2.jpg","bigUrl":"\/images\/thumb\/2\/27\/Undo-in-Google-Colab-Step-2.jpg\/v4-728px-Undo-in-Google-Colab-Step-2.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><p>License: <a target=\"_blank\" rel=\"nofollow noreferrer noopener\" class=\"external text\" href=\"https:\/\/en.wikipedia.org\/wiki\/Fair_use\">Fair Use<\/a> (screenshot)<br>\n<\/p><\/div>"}
    You'll see this menu at the top of Colab. The name of the Undo option will vary depending on the type of change you want to undo.
    • For example, if your last action was converting a cell, you'll see Undo cell conversion . If the last thing you did was delete a cell, you'll see Undo delete cell .
    • To redo, click the Edit menu and select Redo .
Section 3 of 3:

Revert to a Previous Version

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  1. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/a\/ab\/Undo-in-Google-Colab-Step-3.jpg\/v4-460px-Undo-in-Google-Colab-Step-3.jpg","bigUrl":"\/images\/thumb\/a\/ab\/Undo-in-Google-Colab-Step-3.jpg\/v4-728px-Undo-in-Google-Colab-Step-3.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><p>License: <a target=\"_blank\" rel=\"nofollow noreferrer noopener\" class=\"external text\" href=\"https:\/\/en.wikipedia.org\/wiki\/Fair_use\">Fair Use<\/a> (screenshot)<br>\n<\/p><\/div>"}
    You'll see this above your document space at the top of Colab.
  2. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/b\/b9\/Undo-in-Google-Colab-Step-4.jpg\/v4-460px-Undo-in-Google-Colab-Step-4.jpg","bigUrl":"\/images\/thumb\/b\/b9\/Undo-in-Google-Colab-Step-4.jpg\/v4-728px-Undo-in-Google-Colab-Step-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><p>License: <a target=\"_blank\" rel=\"nofollow noreferrer noopener\" class=\"external text\" href=\"https:\/\/en.wikipedia.org\/wiki\/Fair_use\">Fair Use<\/a> (screenshot)<br>\n<\/p><\/div>"}
    It's near the bottom of the menu and will prompt a new window to open.
  3. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/0\/0a\/Undo-in-Google-Colab-Step-5.jpg\/v4-460px-Undo-in-Google-Colab-Step-5.jpg","bigUrl":"\/images\/thumb\/0\/0a\/Undo-in-Google-Colab-Step-5.jpg\/v4-728px-Undo-in-Google-Colab-Step-5.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><p>License: <a target=\"_blank\" rel=\"nofollow noreferrer noopener\" class=\"external text\" href=\"https:\/\/en.wikipedia.org\/wiki\/Fair_use\">Fair Use<\/a> (screenshot)<br>\n<\/p><\/div>"}
    Click the version on the right side of the page and it will display on the left.
  4. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/6\/6b\/Undo-in-Google-Colab-Step-6.jpg\/v4-460px-Undo-in-Google-Colab-Step-6.jpg","bigUrl":"\/images\/thumb\/6\/6b\/Undo-in-Google-Colab-Step-6.jpg\/v4-728px-Undo-in-Google-Colab-Step-6.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><p>License: <a target=\"_blank\" rel=\"nofollow noreferrer noopener\" class=\"external text\" href=\"https:\/\/en.wikipedia.org\/wiki\/Fair_use\">Fair Use<\/a> (screenshot)<br>\n<\/p><\/div>"}
    This three-dot menu icon is to the right of the version's name and time stamp.
  5. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/3\/31\/Undo-in-Google-Colab-Step-7.jpg\/v4-460px-Undo-in-Google-Colab-Step-7.jpg","bigUrl":"\/images\/thumb\/3\/31\/Undo-in-Google-Colab-Step-7.jpg\/v4-728px-Undo-in-Google-Colab-Step-7.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"<div class=\"mw-parser-output\"><p>License: <a target=\"_blank\" rel=\"nofollow noreferrer noopener\" class=\"external text\" href=\"https:\/\/en.wikipedia.org\/wiki\/Fair_use\">Fair Use<\/a> (screenshot)<br>\n<\/p><\/div>"}
    That version will be restored!
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      1. ↑ https://youtu.be/6CLNDwCdM50?t=87

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