# Error importing DocTest.VisualTest Library **URL:** \ **Category:** Libraries\ **Created:** [5 February 2025 12:42 UTC](https://forum.robotframework.org/t/error-importing-doctest-visualtest-library/8407 "2025-02-05T12:42:17Z")\ **Posts on this page:** 15\ **Page:** 1
**Author:** ![Leo](https://avatars.discourse-cdn.com/v4/letter/l/c2a13f/32.png) [@Leo](https://forum.robotframework.org/u/Leo)\ **Post date:** [5 February 2025 12:42 UTC](https://forum.robotframework.org/t/error-importing-doctest-visualtest-library/8407/1 "2025-02-05T12:42:17Z")
I have a problem with DocTest.VisualTest library: Error importing library ‘DocTest.VisualTest’: ImportError: Error loading DLL when importing \_extra. The message in the robot is: No keyword found with name ‘Compare Images’. I tried several ways and I can’t find the solution I’m using PyCharm Community Edition What can I do? ---
**Author:** ![Many](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.robotframework.org/many/32/658_2.png) [@Many](https://forum.robotframework.org/u/Many)\ **Post date:** [5 February 2025 12:48 UTC](https://forum.robotframework.org/t/error-importing-doctest-visualtest-library/8407/2 "2025-02-05T12:48:54Z")
Have you checked the installation instructions? Are you running on windows? > **[GitHub - manykarim/robotframework-doctestlibrary: Robot Framework DocTest library. Simple Automated...](https://github.com/manykarim/robotframework-doctestlibrary?tab=readme-ov-file#windows-error-message-regarding-pylibdmtx)** > > Robot Framework DocTest library. Simple Automated Visual Document Testing. ---
**Author:** ![Leo](https://avatars.discourse-cdn.com/v4/letter/l/c2a13f/32.png) [@Leo](https://forum.robotframework.org/u/Leo)\ **Post date:** [5 February 2025 13:16 UTC](https://forum.robotframework.org/t/error-importing-doctest-visualtest-library/8407/3 "2025-02-05T13:16:45Z")
The error is on Windows 10. It does not occur on Windows 11. ImportError: DLL load failed while importing _extra: The specified module cannot be found. Traceback (most recent call last): File “C:\code\VMRSeriesTest.venv\Lib\site-packages\DocTest\VisualTest.py”, line 2, in from DocTest.CompareImage import CompareImage File “C:\code\VMRSeriesTest.venv\Lib\site-packages\DocTest\CompareImage.py”, line 19, in import fitz File "C:\code\VMRSeriesTest.venv\Lib\site-packages\fitz\_init_.py", line 2, in from pymupdf import \* File “C:\code\VMRSeriesTest.venv\Lib\site-packages\pymupdf\__init_\_.py”, line 30, in from . import extra File “C:\code\VMRSeriesTest.venv\Lib\site-packages\pymupdf\extra.py”, line 10, in from . import \_extra ---
**Author:** ![Leo](https://avatars.discourse-cdn.com/v4/letter/l/c2a13f/32.png) [@Leo](https://forum.robotframework.org/u/Leo)\ **Post date:** [5 February 2025 13:22 UTC](https://forum.robotframework.org/t/error-importing-doctest-visualtest-library/8407/4 "2025-02-05T13:22:08Z")
I’m using Python 3.12 (Windows 10) and the instructions for installing on Windows don’t mention this error. ---
**Author:** ![Many](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.robotframework.org/many/32/658_2.png) [@Many](https://forum.robotframework.org/u/Many)\ **Post date:** [5 February 2025 13:43 UTC](https://forum.robotframework.org/t/error-importing-doctest-visualtest-library/8407/5 "2025-02-05T13:43:00Z")
mhm, interesting. Could you please do a “pip list” and give the versions of robotframework-doctestlibrary and pymupdf ? ---
**Author:** ![Many](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.robotframework.org/many/32/658_2.png) [@Many](https://forum.robotframework.org/u/Many)\ **Post date:** [5 February 2025 13:46 UTC](https://forum.robotframework.org/t/error-importing-doctest-visualtest-library/8407/6 "2025-02-05T13:46:06Z")
I’m also seeing this error on the PyMuPDF site: > **[Installation - PyMuPDF 1.25.2 documentation](https://pymupdf.readthedocs.io/en/latest/installation.html#problems-after-installation)** > > PyMuPDF is a high-performance Python library for data extraction, analysis, conversion & manipulation of PDF (and other) documents. ---
**Author:** ![Leo](https://avatars.discourse-cdn.com/v4/letter/l/c2a13f/32.png) [@Leo](https://forum.robotframework.org/u/Leo)\ **Post date:** [5 February 2025 13:53 UTC](https://forum.robotframework.org/t/error-importing-doctest-visualtest-library/8407/7 "2025-02-05T13:53:04Z")
Package Version * * * comtypes 1.4.9 deepdiff 8.2.0 imageio 2.37.0 imutils 0.5.4 lazy\_loader 0.4 lxml 5.3.0 MouseInfo 0.1.3 networkx 3.4.2 numpy 1.26.4 opcua 0.98.13 opencv-python-headless 4.11.0.86 orderly-set 5.3.0 packaging 24.2 parsimonious 0.10.0 pillow 11.1.0 pip 23.2.1 PyAutoGUI 0.9.54 PyGetWindow 0.0.9 pylibdmtx 0.1.10 PyMsgBox 1.0.9 PyMuPDF 1.25.2 pyperclip 1.9.0 PyRect 0.2.0 PyScreeze 1.0.1 pytesseract 0.3.13 python-dateutil 2.9.0.post0 pytweening 1.2.0 pytz 2025.1 pywin32 308 pywinauto 0.6.9 pyzbar 0.1.9 regex 2024.11.6 robotframework 7.2 robotframework-doctestlibrary 0.23.0 scikit-image 0.25.1 scipy 1.15.1 setuptools 75.8.0 six 1.17.0 tifffile 2025.1.10 Wand 0.6.13 ---
**Author:** ![Many](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.robotframework.org/many/32/658_2.png) [@Many](https://forum.robotframework.org/u/Many)\ **Post date:** [5 February 2025 14:04 UTC](https://forum.robotframework.org/t/error-importing-doctest-visualtest-library/8407/8 "2025-02-05T14:04:17Z")
Could you try to install pymupdf with a lower version, like `pip install pymupdf==1.24.14` Just wondering if something changed there… ---
**Author:** ![Many](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.robotframework.org/many/32/658_2.png) [@Many](https://forum.robotframework.org/u/Many)\ **Post date:** [5 February 2025 14:07 UTC](https://forum.robotframework.org/t/error-importing-doctest-visualtest-library/8407/9 "2025-02-05T14:07:11Z")
Also seeing the issue reported here at PyMuPDF > > > \### Description of the bug > > Tried reinstalling, changed policy in powershell but… nothing have worked so far. > > > Error log: > > \--------------------------------------------------------------------------- > ImportError Traceback (most recent call last) > Cell In\[29\], \[line 1\](vscode-notebook-cell:?execution\_count=29&line=1) > \----\> \[1\](vscode-notebook-cell:?execution\_count=29&line=1) import fitz # PyMuPDF > \[3\](vscode-notebook-cell:?execution\_count=29&line=3) def test\_pymupdf(): > \[4\](vscode-notebook-cell:?execution\_count=29&line=4) try: > > File c:\\Users\\thiag\\AppData\\Local\\Programs\\Python\\Python311\\Lib\\site-packages\\fitz\\\_\_init\_\_.py:2 > \[1\](file:///C:/Users/thiag/AppData/Local/Programs/Python/Python311/Lib/site-packages/fitz/\_\_init\_\_.py:1) # pylint: disable=wildcard-import,unused-import,unused-wildcard-import > \----\> \[2\](file:///C:/Users/thiag/AppData/Local/Programs/Python/Python311/Lib/site-packages/fitz/\_\_init\_\_.py:2) from pymupdf import \* > \[3\](file:///C:/Users/thiag/AppData/Local/Programs/Python/Python311/Lib/site-packages/fitz/\_\_init\_\_.py:3) from pymupdf import \_as\_fz\_document > \[4\](file:///C:/Users/thiag/AppData/Local/Programs/Python/Python311/Lib/site-packages/fitz/\_\_init\_\_.py:4) from pymupdf import \_as\_fz\_page > > File c:\\Users\\thiag\\AppData\\Local\\Programs\\Python\\Python311\\Lib\\site-packages\\pymupdf\\\_\_init\_\_.py:29 > \[26\](file:///C:/Users/thiag/AppData/Local/Programs/Python/Python311/Lib/site-packages/pymupdf/\_\_init\_\_.py:26) import weakref > \[27\](file:///C:/Users/thiag/AppData/Local/Programs/Python/Python311/Lib/site-packages/pymupdf/\_\_init\_\_.py:27) import zipfile > \---\> \[29\](file:///C:/Users/thiag/AppData/Local/Programs/Python/Python311/Lib/site-packages/pymupdf/\_\_init\_\_.py:29) from . import extra > \[32\](file:///C:/Users/thiag/AppData/Local/Programs/Python/Python311/Lib/site-packages/pymupdf/\_\_init\_\_.py:32) # Set up g\_out\_log and g\_out\_message from environment variables. > \[33\](file:///C:/Users/thiag/AppData/Local/Programs/Python/Python311/Lib/site-packages/pymupdf/\_\_init\_\_.py:33) # > \[34\](file:///C:/Users/thiag/AppData/Local/Programs/Python/Python311/Lib/site-packages/pymupdf/\_\_init\_\_.py:34) # PYMUPDF\_MESSAGE controls the destination of user messages (the \`message()\` > (...) > \[43\](file:///C:/Users/thiag/AppData/Local/Programs/Python/Python311/Lib/site-packages/pymupdf/\_\_init\_\_.py:43) # stdout. > \[44\](file:///C:/Users/thiag/AppData/Local/Programs/Python/Python311/Lib/site-packages/pymupdf/\_\_init\_\_.py:44) # > \[46\](file:///C:/Users/thiag/AppData/Local/Programs/Python/Python311/Lib/site-packages/pymupdf/\_\_init\_\_.py:46) def \_set\_stream(name, default): > ... > \---\> \[10\](file:///C:/Users/thiag/AppData/Local/Programs/Python/Python311/Lib/site-packages/pymupdf/extra.py:10) from . import \_extra > \[11\](file:///C:/Users/thiag/AppData/Local/Programs/Python/Python311/Lib/site-packages/pymupdf/extra.py:11) else: > \[12\](file:///C:/Users/thiag/AppData/Local/Programs/Python/Python311/Lib/site-packages/pymupdf/extra.py:12) import \_extra > > ImportError: DLL load failed while importing \_extra: The specified module could not be found. > > \### How to reproduce the bug > > pip install pymupdf > > > import fitz > > def test\_pymupdf(): > try: > doc = fitz.open("iec60730\_sample\_pics.pdf") > print("PDF opened successfully") > except Exception as e: > print(f"An error occurred: {e}") > > test\_pymupdf() > > \### PyMuPDF version > > 1.24.5 > > \### Operating system > > Windows > > \### Python version > > 3.11 There it was mentioned that installing `pymupdf==1.24.9` could solve it. But still I’d love to figure out the root cause… ---
**Author:** ![Leo](https://avatars.discourse-cdn.com/v4/letter/l/c2a13f/32.png) [@Leo](https://forum.robotframework.org/u/Leo)\ **Post date:** [5 February 2025 14:26 UTC](https://forum.robotframework.org/t/error-importing-doctest-visualtest-library/8407/10 "2025-02-05T14:26:49Z")
Running pip pymupdf==1.24.9 the same error: No keyword with name ‘Compare Images’ found. ---
**Author:** ![Leo](https://avatars.discourse-cdn.com/v4/letter/l/c2a13f/32.png) [@Leo](https://forum.robotframework.org/u/Leo)\ **Post date:** [5 February 2025 14:30 UTC](https://forum.robotframework.org/t/error-importing-doctest-visualtest-library/8407/11 "2025-02-05T14:30:56Z")
I’m going to try using python 3.11 ---
**Author:** ![Many](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.robotframework.org/many/32/658_2.png) [@Many](https://forum.robotframework.org/u/Many)\ **Post date:** [5 February 2025 14:40 UTC](https://forum.robotframework.org/t/error-importing-doctest-visualtest-library/8407/12 "2025-02-05T14:40:50Z")
It should work with Python 3.12 as well. I have the strong feeling that it is caused by a missing Visual C++ Redistributable package. Below you can find a screenshot from my machine. ![image](https://europe1.discourse-cdn.com/flex005/uploads/robotframework1/original/2X/d/dabb53693784aae2db83646bf97ef4b994dd566b.png) Maybe you can compare with your Windows 11 machine where it is working. ---
**Author:** ![Many](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.robotframework.org/many/32/658_2.png) [@Many](https://forum.robotframework.org/u/Many)\ **Post date:** [5 February 2025 14:43 UTC](https://forum.robotframework.org/t/error-importing-doctest-visualtest-library/8407/13 "2025-02-05T14:43:17Z")
Here it is definitely the same problem reported at PyMuPDF > > > system:Windows 10 64 > python:Python 3.10.11 amd64 > pypdf:1.23.3 > > after use pip… install PyMuPdf,get error > > Type "help", "copyright", "credits" or "license" for more information. > \>\>\> import fitz > Traceback (most recent call last): > File "\", line 1, in \ > File "C:\\Users\\yuc\\AppData\\Local\\Programs\\Python\\Python310\\lib\\site-packages\\fitz\\\_\_init\_\_.py", line 22, in \ > from fitz.fitz import \* > File "C:\\Users\\yuc\\AppData\\Local\\Programs\\Python\\Python310\\lib\\site-packages\\fitz\\fitz.py", line 14, in \ > from . import \_fitz > ImportError: DLL load failed while importing \_fitz: 找不到指定的模块。 ---
**Author:** ![HelioGuilherme66](https://dub1.discourse-cdn.com/flex005/user_avatar/forum.robotframework.org/helioguilherme66/32/34_2.png) [@HelioGuilherme66](https://forum.robotframework.org/u/HelioGuilherme66)\ **Post date:** [5 February 2025 16:36 UTC](https://forum.robotframework.org/t/error-importing-doctest-visualtest-library/8407/14 "2025-02-05T16:36:14Z")
> [@Many](#): > > I have the strong feeling that it is caused by a missing Visual C++ Redistributable package. I have just recently discovered that when installing Python from Microsoft Store, the Visual C++ library is missing. ([Here is my video about the installation of RIDE where I have found that problem.](https://youtu.be/lwFrSOabn-g)) ---
**Author:** ![Leo](https://avatars.discourse-cdn.com/v4/letter/l/c2a13f/32.png) [@Leo](https://forum.robotframework.org/u/Leo)\ **Post date:** [5 February 2025 16:51 UTC](https://forum.robotframework.org/t/error-importing-doctest-visualtest-library/8407/15 "2025-02-05T16:51:01Z")
I installed Visual C++ Redistributable package x86 and x64. Then I uninstalled everything with: pip freeze \> out.txt pip uninstall -r out.txt -y and then reinstalled everything again robotframework==7.2 robotframework-doctestlibrary==0.23.0 pyautogui==0.9.54 pywinauto==0.6.9 and it worked!!! thanks for the help!