# ImportError: cannot import name sigtools **URL:** \ **Category:** Mailing List Archive (read-only)\ **Tags:** list-archive\ **Created:** [September 1, 2014, 9:37am UTC](https://mne.discourse.group/t/importerror-cannot-import-name-sigtools/812 "2014-09-01T09:37:05Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\ **Post date:** [September 1, 2014, 9:37am UTC](https://mne.discourse.group/t/importerror-cannot-import-name-sigtools/812/1 "2014-09-01T09:37:05Z")
Hi Maria, I am forwarding this email to the mailing list since this is a new issue than the one you had previously posted. There are more people on the mailing list who can answer your questions and you can expect a faster response. In the future, can you try to share a small gist ( [https://gist.github.com/](https://gist.github.com/)), not more than 15-20 lines to reproduce the problem using the sample dataset? Here is an example to reproduce this problem you had: [https://gist.github.com/mainakjas/966714622a73eaeb9b6f](https://gist.github.com/mainakjas/966714622a73eaeb9b6f). The issue is that picks is a numpy array but evoked.pick\_channels expects a list of strings. You can do something like: evoked\_clean.pick\_channels([evoked\_clean.info['ch\_names'][p] for p in picks\_good]) to solve your problem. Does this work? Mainak ---
**Author:** ![system](https://global.discourse-cdn.com/free1/uploads/mne/original/1X/85cc6bd2b69cb698a166dc6d880fb550510d0144.jpeg) [@system](https://mne.discourse.group/u/system)\ **Post date:** [September 2, 2014, 6:06am UTC](https://mne.discourse.group/t/importerror-cannot-import-name-sigtools/812/2 "2014-09-02T06:06:20Z")
Hi Mainak, Many thanks! This works. Regards, Maria 2014-09-01 12:37 GMT+03:00 Mainak Jas \: > Hi Maria, > > I am forwarding this email to the mailing list since this is a new issue > than the one you had previously posted. There are more people on the > mailing list who can answer your questions and you can expect a faster > response. In the future, can you try to share a small gist ( > [https://gist.github.com/](https://gist.github.com/)), not more than 15-20 lines to reproduce the > problem using the sample dataset? Here is an example to reproduce this > problem you had: [https://gist.github.com/mainakjas/966714622a73eaeb9b6f](https://gist.github.com/mainakjas/966714622a73eaeb9b6f). > > The issue is that picks is a numpy array but evoked.pick\_channels expects > a list of strings. You can do something like: > > evoked\_clean.pick\_channels([evoked\_clean.info['ch\_names'][p] for p in > picks\_good]) > > to solve your problem. Does this work? > > Mainak > > > Hi again Mainak, > > > > I managed to solve that import error already by closing all terminals and > > logging off. The figures are also saved correctly now and the events are > > printed in a file. Many thanks for your advice! > > > > However, there is still one problem, I haven't managed to solve. I wonder > > if you have any ideas how it could be solved? I get the following error: > > > > ValueError Traceback (most recent call > > last) > > /usr/lib/python2.7/dist-packages/IPython/utils/py3compat.pyc in > > execfile(fname, \*where) > >     173 else: > >     174 filename = fname > > --\> 175 \_\_builtin\_\_.execfile(filename, \*where) > > > > /scratch/braindata/mhhakone/intell/scripts/evoke\_and\_do\_ica.py in > > \() > >     141 filename =subject+session+file\_end > >     142 picks\_good = mne.pick\_types(evoked\_clean.info, meg=True, > > eeg=False, eog=True, ecg=False, stim=False, exclude='bads') > > --\> 143 evoked\_clean.pick\_channels(picks\_good) > >     144 evoked\_clean.save(filename) > >     145 > > > > /home/mhhakone/env/src/mne/mne/channels.pyc in pick\_channels(self, > > ch\_names, copy) > >     147 > >     148 idx = [inst.ch\_names.index(c) for c in ch\_names if c in > > inst.ch\_names] > > --\> 149 inst.\_pick\_drop\_channels(idx) > >     150 > >     151 return inst > > > > /home/mhhakone/env/src/mne/mne/channels.pyc in \_pick\_drop\_channels(self, > > idx) > >     189 self.cals = self.cals[idx] > >     190 > > --\> 191 self.info = pick\_info(self.info, idx, copy=False) > >     192 > >     193 if inst\_has('\_projector'): > > > > /home/mhhakone/env/src/mne/mne/io/pick.pyc in pick\_info(info, sel, copy) > >     285 > >     286 if len(sel) == 0: > > --\> 287 raise ValueError('Warning : No channels match the > > selection.') > >     288 > >     289 info['chs'] = [info['chs'][k] for k in sel] > > > > ValueError: Warning : No channels match the selection. > > > > I don't really understand how it is possible that no channels match the > > selection if picks\_good are calculated from evoked\_clean? > > > > picks\_good and evoked\_clean are as follows: > > > > In [4]: picks\_good > > Out[4]: > > array([ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, > >         13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, > >         26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, > >         39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, > >         52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, > >         65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, > >         78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, > >         91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, > >        104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, > >        117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, > >        130, 131, 132, 133, 134, 135, 136, 137, 138, 139, 140, 141, 142, > >        143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, > >        156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, 168, > >        169, 170, 171, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, > >        182, 183, 184, 185, 186, 187, 188, 189, 190, 191, 192, 193, 194, > >        195, 196, 197, 198, 199, 200, 201, 202, 203, 204, 205, 206, 207, > >        208, 209, 210, 211, 212, 213, 214, 215, 216, 217, 218, 219, 220, > >        221, 222, 223, 224, 225, 226, 227, 228, 229, 230, 231, 232, 233, > >        234, 235, 236, 237, 238, 239, 240, 241, 242, 243, 244, 245, 246, > >        247, 248, 249, 250, 251, 252, 253, 254, 255, 256, 257, 258, 259, > >        260, 261, 262, 263, 264, 265, 266, 267, 268, 269, 270, 271, 272, > >        273, 274, 275, 276, 277, 278, 279, 280, 281, 282, 283, 284, 285, > >        286, 287, 288, 289, 290, 291, 292, 293, 294, 295, 296, 297, 298, > >        299, 300, 301, 302, 303, 304, 305]) > > > >   In [5]: evoked\_clean > > Out[5]: \ > n\_epochs : 148, n\_channels x n\_times : 306 x 1321\> > > > > Thanks already in advance if you have yet time to help! > > > > Regards, > > Maria > > \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ > > L?hett?j?: Hakonen Maria > > L?hetetty: 30. elokuuta 2014 10:02 > > Vastaanottaja: mainakjas at gmail.com > > Aihe: ImportError: cannot import name sigtools > > > > Hi, > > > > I have tried to run the MEG preprocessing script but import mne gives the > > error: > > > > ImportError Traceback (most recent call > > last) > > /scratch/braindata/mhhakone/intell/scripts/\ > > in \() > > ----\> 1 import mne > > > > /home/mhhakone/env/src/mne/mne/\_\_init\_\_.py in \() > >       8 get\_config, get\_config\_path, set\_cache\_dir, > >       9 set\_memmap\_min\_size) > > ---\> 10 from .io.pick import (pick\_types, pick\_channels, > > pick\_types\_evoked, > >      11 pick\_channels\_regexp, pick\_channels\_forward, > >      12 pick\_types\_forward, pick\_channels\_cov, > > > > /home/mhhakone/env/src/mne/mne/io/\_\_init\_\_.py in \() > >       6 # License: BSD (3-clause) > > > >       7 > > ----\> 8 from .open import fiff\_open, show\_fiff, \_fiff\_get\_fid > >       9 from .meas\_info import read\_fiducials, write\_fiducials, > > read\_info, write\_info > >      10 > > > > /home/mhhakone/env/src/mne/mne/io/open.py in \() > >      10 > >      11 from .tag import read\_tag\_info, read\_tag, read\_big, Tag > > ---\> 12 from .tree import make\_dir\_tree > >      13 from .constants import FIFF > >      14 from ..utils import logger, verbose > > > > /home/mhhakone/env/src/mne/mne/io/tree.py in \() > >      10 from .tag import Tag > >      11 from .tag import read\_tag > > ---\> 12 from .write import write\_id, start\_block, end\_block, \_write > >      13 from ..utils import logger, verbose > >      14 > > > > /home/mhhakone/env/src/mne/mne/io/write.py in \() > >      15 from ..utils import logger > >      16 from ..externals.jdcal import jcal2jd > > ---\> 17 from ..fixes import gzip\_open > >      18 > >      19 > > > > /home/mhhakone/env/src/mne/mne/fixes.py in \() > >      24 from numpy.fft import irfft > >      25 from nose.tools import assert\_true > > ---\> 26 from scipy.signal import filtfilt as sp\_filtfilt > >      27 from distutils.version import LooseVersion > >      28 from functools import partial > > > > /home/mhhakone/env/local/lib/python2.7/site-packages/scipy/signal/\_\_init\_\_.py > > in \() > >     230 from \_\_future\_\_ import division, print\_function, absolute\_import > >     231 > > --\> 232 from . import sigtools > >     233 from .waveforms import \* > >     234 > > > > ImportError: cannot import name sigtools > > > > I wonder if you know what could cause this error? I haven't got it > > before. Could it be relatrd to the Python version I have. Now I have the > > following version: > > > > In [18]: sys.version > > Out[18]: '2.7.3 (default, Feb 27 2014, 19:58:35) \n[GCC 4.6.3]' > > > > Thanks, > > Maria > > \_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ > Mne\_analysis mailing list > Mne\_analysis at nmr.mgh.harvard.edu > [Mne\_analysis Info Page](https://mail.nmr.mgh.harvard.edu/mailman/listinfo/mne_analysis) > > The information in this e-mail is intended only for the person to whom it > is > addressed. If you believe this e-mail was sent to you in error and the > e-mail > contains patient information, please contact the Partners Compliance > HelpLine at > [MyComplianceReport.com: Compliance and Ethics Reporting](http://www.partners.org/complianceline) . 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