TclError: no display name and $ DISPLAY variable for Windows 10 Bash

Question

I tried installing matplotlib on the Windows 10 Bash shell.

After that, I performed the following lines:

$ ipython3 

then

 In[1]: %pylab 

then this gives me the following error:

 --------------------------------------------------------------------------- TclError Traceback (most recent call last) <ipython-input-1-4ab7ec3413a5> in <module>() ----> 1 get_ipython().magic('pylab') /usr/lib/python3/dist-packages/IPython/core/interactiveshell.py in magic(self, arg_s) 2164 magic_name, _, magic_arg_s = arg_s.partition(' ') 2165 magic_name = magic_name.lstrip(prefilter.ESC_MAGIC) -> 2166 return self.run_line_magic(magic_name, magic_arg_s) 2167 2168 #------------------------------------------------------------------------- /usr/lib/python3/dist-packages/IPython/core/interactiveshell.py in run_line_magic(self, magic_name, line) 2085 kwargs['local_ns'] = sys._getframe(stack_depth).f_locals 2086 with self.builtin_trap: -> 2087 result = fn(*args,**kwargs) 2088 return result 2089 /usr/lib/python3/dist-packages/IPython/core/magics/pylab.py in pylab(self, line) /usr/lib/python3/dist-packages/IPython/core/magic.py in <lambda>(f, *a, **k) 190 # but it overkill for just that one bit of state. 191 def magic_deco(arg): --> 192 call = lambda f, *a, **k: f(*a, **k) 193 194 if isinstance(arg, collections.Callable): /usr/lib/python3/dist-packages/IPython/core/magics/pylab.py in pylab(self, line) 129 import_all = not args.no_import_all 130 --> 131 gui, backend, clobbered = self.shell.enable_pylab(args.gui, import_all=import_all) 132 self._show_matplotlib_backend(args.gui, backend) 133 print ("Populating the interactive namespace from numpy and matplotlib") /usr/lib/python3/dist-packages/IPython/core/interactiveshell.py in enable_pylab(self, gui, import_all, welcome_message) 2918 from IPython.core.pylabtools import import_pylab 2919 -> 2920 gui, backend = self.enable_matplotlib(gui) 2921 2922 # We want to prevent the loading of pylab to pollute the user's /usr/lib/python3/dist-packages/IPython/core/interactiveshell.py in enable_matplotlib(self, gui) 2879 gui, backend = pt.find_gui_and_backend(self.pylab_gui_select) 2880 -> 2881 pt.activate_matplotlib(backend) 2882 pt.configure_inline_support(self, backend) 2883 /usr/lib/python3/dist-packages/IPython/core/pylabtools.py in activate_matplotlib(backend) 244 matplotlib.rcParams['backend'] = backend 245 --> 246 import matplotlib.pyplot 247 matplotlib.pyplot.switch_backend(backend) 248 /usr/local/lib/python3.4/dist-packages/matplotlib/pyplot.py in <module>() 2510 # are no-ops and the registered function respect `mpl.is_interactive()` 2511 # to determine if they should trigger a draw. -> 2512 install_repl_displayhook() 2513 2514 ################# REMAINING CONTENT GENERATED BY boilerplate.py ############## /usr/local/lib/python3.4/dist-packages/matplotlib/pyplot.py in install_repl_displayhook() 163 ipython_gui_name = backend2gui.get(get_backend()) 164 if ipython_gui_name: --> 165 ip.enable_gui(ipython_gui_name) 166 else: 167 _INSTALL_FIG_OBSERVER = True /usr/lib/python3/dist-packages/IPython/terminal/interactiveshell.py in enable_gui(gui, app) 306 from IPython.lib.inputhook import enable_gui as real_enable_gui 307 try: --> 308 return real_enable_gui(gui, app) 309 except ValueError as e: 310 raise UsageError("%s" % e) /usr/lib/python3/dist-packages/IPython/lib/inputhook.py in enable_gui(gui, app) 526 e = "Invalid GUI request %r, valid ones are:%s" % (gui, list(guis.keys())) 527 raise ValueError(e) --> 528 return gui_hook(app) 529 /usr/lib/python3/dist-packages/IPython/lib/inputhook.py in enable_tk(self, app) 322 if app is None: 323 import tkinter --> 324 app = tkinter.Tk() 325 app.withdraw() 326 self._apps[GUI_TK] = app /usr/lib/python3.4/tkinter/__init__.py in __init__(self, screenName, baseName, className, useTk, sync, use) 1852 baseName = baseName + ext 1853 interactive = 0 -> 1854 self.tk = _tkinter.create(screenName, baseName, className, interactive, wantobjects, useTk, sync, use) 1855 if useTk: 1856 self._loadtk() TclError: no display name and no $DISPLAY environment variable 

I would be grateful if anyone could indicate how to remove this error. Thanks.

Answer 1

There is no official display environment for bash on Windows.

• You need to set up a non-contact display environment, i.e. xming ( https://sourceforge.net/projects/xming/ )
• After installing xming, you need to export as DISPLAY =: 0 .
• You also need to install qtconsole. sudo apt-get install qtconsole

However, I do not suggest going this way, there is a much simpler way to use ipython on Windows. You can install Anaconda on Windows, and you can use ipython without any problems ( https://www.continuum.io/downloads )