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56	56	**Slide** listing prerequisites
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59		-I shall be demonstrating the installation on a computer with Ubuntu 18.04 OS installed. The steps are likely to remain very similar for other versions of Ubuntu OS, and also not expected to vary significantly for other Linux distributions. In the latter case, you will find on the Internet about how to carry out the equivalent of the tasks demonstrated here using Ubuntu OS.
	59	+I shall be demonstrating the installation on a computer with Ubuntu 18.04 OS installed. The steps are likely to remain very similar for other versions of Ubuntu OS, and also not expected to vary significantly for other Linux distributions. In the latter case, you will find on the Internet about how to carry out the equivalent of the tasks demonstrated here using Ubuntu OS. Also, the tutorial will focus only on Python 3, as Python 2 has now been deprecated. On my system
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61	61	(% class="box infomessage" %)
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63	63	**Screencast** - blank document in editor
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66		-We shall make use of virtualenv (virtual environment) in this tutorial. This allows multiple Python projects to coexist on the same computer, even when they might have different, and even conflicting, requirements. It helps isolate projects and thereby preventing unrequested changes in others, when any one of them is updated.
	66	+We shall make use of virtual environments in this tutorial. This allows multiple Python projects to coexist on the same computer, even when they might have different, and even conflicting, requirements. It helps isolate projects and thereby preventing unrequested changes in others, when any one of them is updated.
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68	68	(% class="box infomessage" %)
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70	70	**Screencast** - current state of editor
71	71	\\(% style="color:#000000" %)"""install and setup new virtualenv project"""(%%)
72	72	\\(% style="color:#000000" %)sudo pip install virtualenv
	73	+\\"""if already installed, ensure we have latest package by upgrading"""
	74	+\\pip install ~-~-upgrade virtualenv
73	73	\\"""create a directory for project"""
74	74	\\cd ~~
75	75	mkdir pynn_project
76	76	cd pynn_project
77	77	\\"""create a virtual environment for this project"""
78		-virtualenv pynn_env
	80	+python -m venv pynn_env
	81	+\\ls
	82	+<< show created directory >>
79	79	)))
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