PyQt5: NameError: 'QtWidget' is not defined - Ask Ubuntu

moving flask app local environment ubuntu 14.04. getting 'nameerror: 'qtwidgets' not defined"

have done following:

sudo apt-get install python3-pyqt5  

verified following command:

apt-cache policy python3-pyqt5          result: "python3-pyqt5:                       installed: 5.2.1+dfsg-1ubuntu1                       candidate: 5.2.1+dfsg-1ubuntu1                       version table:                     ***5.2.1+dfsg-1ubuntu1 0                           500 http://mirrors.digitalocean.com/ubuntu/ trusty/main amd64 packages" 

tried following command python command line:

from pyqt5 import qtwidgets  

got following response:

importerror: no module named 'pyqt5' 

i'll admit being relatively new this, it's obvious experienced folks. in event insights can offer.

indeed simple: qtwidgets , i.e. non-singular

>>> pyqt5.gui import qtwidget traceback (most recent call last):   file "<stdin>", line 1, in <module> importerror: no module named 'pyqt5.gui' >>> pyqt5 import qtwidgets >>> 

also, ensure you're calling correct interpreter. you've installed pyqt5 python3, use python3:

$ python python 2.7.12 (default, jul  1 2016, 15:12:24)  [gcc 5.4.0 20160609] on linux2 type "help", "copyright", "credits" or "license" more information. >>> pyqt5 import qtwidgets traceback (most recent call last):   file "<stdin>", line 1, in <module> importerror: no module named pyqt5 >>>   $ python3 python 3.5.2 (default, sep 10 2016, 08:21:44)  [gcc 5.4.0 20160609] on linux type "help", "copyright", "credits" or "license" more information. >>> pyqt5 import qtwidgets >>>