# errors about mne.io.read\_raw\_cnt()

**URL:** <https://mne.discourse.group/t/errors-about-mne-io-read-raw-cnt/8604>\
**Category:** Support & Discussions\
**Created:** [April 9, 2024, 8:42am UTC](https://mne.discourse.group/t/errors-about-mne-io-read-raw-cnt/8604 "2024-04-09T08:42:46Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Annsas](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/annsas/32/3170_2.png) [@Annsas](https://mne.discourse.group/u/Annsas)\
**Post date:** [April 9, 2024, 8:42am UTC](https://mne.discourse.group/t/errors-about-mne-io-read-raw-cnt/8604/1 "2024-04-09T08:42:46Z")

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import mne  
data=mne.io.read\_raw\_cnt(“E:\subject1\subject1\S01.cnt”)  
print()

ValueError: not enough values to unpack (expected 2, got 0)  
collected

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**Author:** ![Annsas](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/annsas/32/3170_2.png) [@Annsas](https://mne.discourse.group/u/Annsas)\
**Post date:** [April 9, 2024, 8:43am UTC](https://mne.discourse.group/t/errors-about-mne-io-read-raw-cnt/8604/2 "2024-04-09T08:43:53Z")

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the data from

> **[Disentangling somatosensory evoked potentials of the fingers: limitations and...](https://data.4tu.nl/datasets/0b557030-0c34-445b-a11e-0d279e07b8b4/1)**
>
> 4TU.ResearchData is an international data repository for science, engineering and design. We offer research dataset curation, sharing, long-term access and preservation services to anyone, anywhere. Our training and community engagement resources are...

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**Author:** ![cbrnr](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/cbrnr/32/1409_2.png) [@cbrnr](https://mne.discourse.group/u/cbrnr)\
**Post date:** [April 9, 2024, 8:52am UTC](https://mne.discourse.group/t/errors-about-mne-io-read-raw-cnt/8604/3 "2024-04-09T08:52:12Z")

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The function `mne.io.read_raw_cnt()` supports only Neuroscan .cnt files, but ANT devices also produce files with the .cnt extension (these are two different formats). According to the [`readme.txt`](https://data.4tu.nl/file/0b557030-0c34-445b-a11e-0d279e07b8b4/2b19d84b-ac5d-476d-9311-28ef42425548) you linked, this dataset uses the ANT format. See also [Error reading \*.cnt eeg file - #5 by drammock](https://mne.discourse.group/t/error-reading-cnt-eeg-file/2796/5).

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**Author:** ![Annsas](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/annsas/32/3170_2.png) [@Annsas](https://mne.discourse.group/u/Annsas)\
**Post date:** [April 9, 2024, 3:23pm UTC](https://mne.discourse.group/t/errors-about-mne-io-read-raw-cnt/8604/4 "2024-04-09T15:23:38Z")

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It works,thank you very much!

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**Author:** ![cbrnr](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/cbrnr/32/1409_2.png) [@cbrnr](https://mne.discourse.group/u/cbrnr)\
**Post date:** [April 9, 2024, 3:27pm UTC](https://mne.discourse.group/t/errors-about-mne-io-read-raw-cnt/8604/5 "2024-04-09T15:27:18Z")

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Great! Would you mind sharing how you solved this problem? How did you read the files?

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**Author:** ![Annsas](https://yyz2.discourse-cdn.com/free1/user_avatar/mne.discourse.group/annsas/32/3170_2.png) [@Annsas](https://mne.discourse.group/u/Annsas)\
**Post date:** [April 15, 2024, 3:25am UTC](https://mne.discourse.group/t/errors-about-mne-io-read-raw-cnt/8604/6 "2024-04-15T03:25:19Z")

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please ref :[https://blog.csdn.net/qq\_26169815/article/details/137560021?spm=1001.2014.3001.5502](https://blog.csdn.net/qq_26169815/article/details/137560021?spm=1001.2014.3001.5502)