Last modified by adavison on 2022/10/04 13:53
From version 27.3
edited by shailesh
on 2021/10/08 10:25
Change comment: There is no comment for this version
To version 27.9
edited by shailesh
on 2021/10/08 11:06
Change comment: There is no comment for this version

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111 111  
112 112  Notice how this changes the command prompt to show the name of your virtual environment. In our case, we had named it 'pynn_env', and this is now reflected as a prefix to the command prompt. This confirms that we are now in our new virtual environment.
113 113  
114 +(% class="box warningmessage" %)
115 +(((
116 +**Note:**
117 +\\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.
118 +)))
119 +
114 114  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.
115 115  
116 116  We start here with the installation of Brian 2. Brian 2 can be installed simply using the pip command.
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171 171  \\exit()
172 172  )))
173 173  
180 +(% class="box warningmessage" %)
181 +(((
182 +**Note:**
183 +\\I find that I receive a "no module named nest" error, when trying this right after installing NEST. But it succeeds after a restart. So if you do observe an error, close all programs and restart your computer, and try again. This time it should execute as expected.
184 +)))
185 +
174 174  If there are no error messages here, and the import is successful, then we have completed installing NEST simulator, and are able to load it on Python.
175 175  
176 -We next move on to the third simulation, NEURON. The installation for NEURON is a bit more involved.
188 +We next move on to the third simulator, NEURON. The installation for NEURON used to be more involved previously, but can now be easily completed using the 'pip' command:
177 177  
178 -<< add more >>
190 +(% class="box infomessage" %)
191 +(((
192 +**Screencast** - terminal
193 +\\(% style="color:#000000" %)pip install neuron
194 +)))
179 179  
196 +This installs the NEURON simulator on your system. To confirm that we have properly installed NEURON, we can test as follows:
197 +
198 +(% class="box infomessage" %)
199 +(((
200 +**Screencast** - terminal
201 +\\(% style="color:#000000" %)nrngui
202 +)))
203 +
204 +This will display the NEURON banner, which mentions the version amongst other info. Here, as we can see, we have now installed NEURON v8.0.0 on our system. Let us next verify that this is indeed accessible via Python.
205 +
206 +(% class="box infomessage" %)
207 +(((
208 +**Screencast** - terminal
209 +\\(% style="color:#000000" %)python3
210 +\\from neuron import h
211 +\\exit()
212 +)))
213 +
214 +
215 +
180 180  (% class="box successmessage" %)
181 181  (((
182 182  **Slide** recap of learning objectives