Last modified by adavison on 2022/10/04 13:53
From version 21.8
edited by shailesh
on 2021/10/06 14:04
Change comment: There is no comment for this version
To version 22.1
edited by shailesh
on 2021/10/06 14:33
Change comment: There is no comment for this version

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83 83  \\(% style="color:#000000" %)python -m venv pynn_env
84 84  )))
85 85  
86 -A
86 +This will create a sub-directory named 'pynn_env' within our project directory, with several files and sub-directories. Let us take a look at the 'site-packages' directory.
87 87  
88 88  (% class="box infomessage" %)
89 89  (((
90 90  **Screencast** - file explorer
91 -\\<< show directory contents; especially site-packages >>
91 +\\(% style="color:#000000" %)<< show directory contents; especially lib/python3.9/site-packages >>
92 92  )))
93 93  
94 +As you see here, only a limited number of basic packages have currently been installed in this virtual environment. In the steps ahead, we shall install various other packages, and you shall see that these would be reflected here.
94 94  
96 +To enter into this virtual environment, and thereby use its resources in isolation from other projects on your computer, we require to "activate" it. This is achieved by running the command:
97 +
98 +(% class="box infomessage" %)
99 +(((
100 +**Screencast** - terminal
101 +\\(% style="color:#000000" %)source pynn_env/bin/activate
102 +)))
103 +
104 +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.
105 +
95 95  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.
96 96  
97 97  We start here with the installation of Brian2.
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98 98  
99 99  (% class="box infomessage" %)
100 100  (((
101 -**Screencast** - current state of editor
102 -\\
112 +**Screencast** - terminal
113 +
103 103  )))
104 104  
105 105