(User) C:\Users\KUMAR'S>ipython --pylab
Python 3.5.2 |Enthought, Inc. (x86_64)| (default, Mar 2 2017, 16:37:47) [MSC v.1900 64 bit (AMD64)]
Type "copyright", "credits" or "license" for more information.

IPython 5.3.0 -- An enhanced Interactive Python.
? -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help -> Python's own help system.
object? -> Details about 'object', use 'object??' for extra details.
[TerminalIPythonApp] WARNING | Eventloop or matplotlib integration failed. Is matplotlib installed?
---------------------------------------------------------------------------
ImportError Traceback (most recent call last)
C:\Users\KUMAR'S\AppData\Local\Enthought\Canopy\edm\envs\User\lib\site-packages\matplotlib\backends\qt_compat.py in <module>()
176 try:
--> 177 from PySide import QtCore, QtGui, __version__, __version_info__
178 except ImportError:

ImportError: No module named 'PySide'

During handling of the above exception, another exception occurred:

ImportError Traceback (most recent call last)
C:\Users\KUMAR'S\AppData\Local\Enthought\Canopy\edm\envs\User\lib\site-packages\IPython\core\shellapp.py in <lambda>(key)
196 shell = self.shell
197 if self.pylab:
--> 198 enable = lambda key: shell.enable_pylab(key, import_all=self.pylab_import_all)
199 key = self.pylab
200 elif self.matplotlib:

C:\Users\KUMAR'S\AppData\Local\Enthought\Canopy\edm\envs\User\lib\site-packages\IPython\core\interactiveshell.py in enable_pylab(self, gui, import_all, welcome_message)
2986 from IPython.core.pylabtools import import_pylab
2987
-> 2988 gui, backend = self.enable_matplotlib(gui)
2989
2990 # We want to prevent the loading of pylab to pollute the user's

C:\Users\KUMAR'S\AppData\Local\Enthought\Canopy\edm\envs\User\lib\site-packages\IPython\core\interactiveshell.py in enable_matplotlib(self, gui)
2947 gui, backend = pt.find_gui_and_backend(self.pylab_gui_select)
2948
-> 2949 pt.activate_matplotlib(backend)
2950 pt.configure_inline_support(self, backend)
2951

C:\Users\KUMAR'S\AppData\Local\Enthought\Canopy\edm\envs\User\lib\site-packages\IPython\core\pylabtools.py in activate_matplotlib(backend)
305 matplotlib.rcParams['backend'] = backend
306
--> 307 import matplotlib.pyplot
308 matplotlib.pyplot.switch_backend(backend)
309

C:\Users\KUMAR'S\AppData\Local\Enthought\Canopy\edm\envs\User\lib\site-packages\matplotlib\pyplot.py in <module>()
113
114 from matplotlib.backends import pylab_setup
--> 115 _backend_mod, new_figure_manager, draw_if_interactive, _show = pylab_setup()
116
117 _IP_REGISTERED = None

C:\Users\KUMAR'S\AppData\Local\Enthought\Canopy\edm\envs\User\lib\site-packages\matplotlib\backends\__init__.py in pylab_setup()
30 # imports. 0 means only perform absolute imports.
31 backend_mod = __import__(backend_name,
---> 32 globals(),locals(),[backend_name],0)
33
34 # Things we pull in from all backends

C:\Users\KUMAR'S\AppData\Local\Enthought\Canopy\edm\envs\User\lib\site-packages\matplotlib\backends\backend_qt4agg.py in <module>()
16
17
---> 18 from .backend_qt5agg import FigureCanvasQTAggBase as _FigureCanvasQTAggBase
19
20 from .backend_agg import FigureCanvasAgg

C:\Users\KUMAR'S\AppData\Local\Enthought\Canopy\edm\envs\User\lib\site-packages\matplotlib\backends\backend_qt5agg.py in <module>()
14
15 from .backend_agg import FigureCanvasAgg
---> 16 from .backend_qt5 import QtCore
17 from .backend_qt5 import QtGui
18 from .backend_qt5 import FigureManagerQT

C:\Users\KUMAR'S\AppData\Local\Enthought\Canopy\edm\envs\User\lib\site-packages\matplotlib\backends\backend_qt5.py in <module>()
24
25 from matplotlib.widgets import SubplotTool
---> 26 import matplotlib.backends.qt_editor.figureoptions as figureoptions
27
28 from .qt_compat import (QtCore, QtGui, QtWidgets, _getSaveFileName,

C:\Users\KUMAR'S\AppData\Local\Enthought\Canopy\edm\envs\User\lib\site-packages\matplotlib\backends\qt_editor\figureoptions.py in <module>()
18 import matplotlib
19 from matplotlib import cm, markers, colors as mcolors
---> 20 import matplotlib.backends.qt_editor.formlayout as formlayout
21 from matplotlib.backends.qt_compat import QtGui
22

C:\Users\KUMAR'S\AppData\Local\Enthought\Canopy\edm\envs\User\lib\site-packages\matplotlib\backends\qt_editor\formlayout.py in <module>()
54
55 from matplotlib import colors as mcolors
---> 56 from matplotlib.backends.qt_compat import QtGui, QtWidgets, QtCore
57
58

C:\Users\KUMAR'S\AppData\Local\Enthought\Canopy\edm\envs\User\lib\site-packages\matplotlib\backends\qt_compat.py in <module>()
178 except ImportError:
179 raise ImportError(
--> 180 "Matplotlib qt-based backends require an external PyQt4, PyQt5,\n"
181 "or PySide package to be installed, but it was not found.")
182

ImportError: Matplotlib qt-based backends require an external PyQt4, PyQt5,
or PySide package to be installed, but it was not found.

In [1]: x=linspace(-5*pi,5*pi,500)
---------------------------------------------------------------------------
NameError Traceback (most recent call last)
<ipython-input-1-894bf0bee282> in <module>()
----> 1 x=linspace(-5*pi,5*pi,500)

NameError: name 'linspace' is not defined

Sir

kindly provide above solution. linspace not defined. what may be the reason.

Indrajit Kumar