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123	123	\\You might be required to run the above command every time you open a new terminal window. Do verify that the terminal command prompt indicates the name of your virtual environment to confirm that you have indeed activated it.
124	124	)))
125	125
126		-Now that we have our project's virtual environment setup, we are now ready to install PyNN and other simulators. In general, it is advisable to install the various simulators (especially NEURON and NEST) prior to installing PyNN, because PyNN will then auto compile NEURON's NMODL fles and NEST's extensions during installation. Alternatively, this would need to be done manually as described on the PyNN website. In this tutorial, we will adopt the easier approach and begin by installing the simulators. For the purposes of this tutorial, we shall demonstrate the installation of Brian2, NEURON and NEST simulators.
	126	+Now that we have our project's virtual environment setup, we are now ready to install PyNN and other simulators. In general, it is advisable to install the various simulators (especially NEURON and NEST) prior to installing PyNN, because PyNN will then auto compile NEURON's NMODL fles and NEST's extensions during installation. In this tutorial, we will adopt this approach and begin by installing the simulators. For the purposes of this tutorial, we shall demonstrate the installation of Brian2, NEURON and NEST simulators.
127	127
	128	+(% class="box errormessage" %)
	129	+(((
	130	+**Note:**
	131	+\\If you have previously already installed NEURON or NEST on your system and are installing PyNN now, then you would require to compile NEURON's NMODL fles and NEST's extensions manually. For more instructions on this, take a look at:
	132	+[[(% style="color:#000000" %)http:~~/~~/neuralensemble.org/docs/PyNN/installation.html>>http://neuralensemble.org/docs/PyNN/installation.html]]
	133	+)))
	134	+
128	128	We start here with the installation of Brian 2. Brian 2 can be installed simply using the pip command.
129	129
130	130	(% class="box infomessage" %)
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225	225
226	226	If there are no error messages here, and the import is successful, then we have completed installing NEURON simulator, and are able to load it via Python.
227	227
	235	+Now that we have installed all the simulators we intend to use, we move on to installing PyNN itself. As PyNN is a Python package, we can install it easily using the 'pip' command:
228	228
	237	+(% class="box infomessage" %)
	238	+(((
	239	+**Screencast** - terminal
	240	+\\(% style="color:#000000" %)pip install pyNN
	241	+)))
	242	+
	243	+To verify that PyNN has been successfully installed on our system, and that it is indeed able to communicate with the other simulators that we installed earlier, we can try running:
	244	+
	245	+(% class="box infomessage" %)
	246	+(((
	247	+**Screencast** - terminal
	248	+
	249	+(% style="color:#000000" %)python
	250	+\\import pyNN.brian2 as sim
	251	+
	252	+(% style="color:#000000" %)sim.setup()
	253	+
	254	+(% style="color:#000000" %)sim.end()
	255	+)))
	256	+
	257	+This confirms that PyNN has been properly setup, and also that is able to employ Brian 2. To verify similary test that PyNN is also able to communicate with NEURON and NEST simulators:
	258	+
	259	+(% class="box infomessage" %)
	260	+(((
	261	+**Screencast** - terminal
	262	+
	263	+(% style="color:#000000" %)python
	264	+\\import pyNN.nest as sim
	265	+
	266	+(% style="color:#000000" %)sim.setup()
	267	+
	268	+(% style="color:#000000" %)sim.end()
	269	+
	270	+
	271	+
	272	+(% style="color:#000000" %)import pyNN.neuron as sim
	273	+
	274	+(% style="color:#000000" %)sim.setup()
	275	+
	276	+(% style="color:#000000" %)sim.end()
	277	+)))
	278	+
	279	+A
	280	+
229	229	(% class="box successmessage" %)
230	230	(((
231	231	**Slide** recap of learning objectives