WEBVTT

1
00:00:04.550 --> 00:00:06.050
In this video we're going to go ahead

2
00:00:06.050 --> 00:00:08.690
and download and install Python or

3
00:00:08.690 --> 00:00:10.910
rather get Python 3 working on this

4
00:00:10.910 --> 00:00:13.039
computer. Now we don't actually have to

5
00:00:13.039 --> 00:00:14.690
download and install anything on most

6
00:00:14.690 --> 00:00:16.760
Linux distros and that's because it

7
00:00:16.760 --> 00:00:18.890
normally comes pre-installed with both

8
00:00:18.890 --> 00:00:21.020
Python 2 which we won't be using in this

9
00:00:21.020 --> 00:00:23.660
course and the newer Python 3, so to

10
00:00:23.660 --> 00:00:25.340
confirm that till you've got python on

11
00:00:25.340 --> 00:00:27.680
your Linux distribution and I'm running

12
00:00:27.680 --> 00:00:29.539
a bunty Linux 16.04 in this

13
00:00:29.539 --> 00:00:31.760
example, just open a terminal or command

14
00:00:31.760 --> 00:00:33.610
window I'm going to click on terminal

15
00:00:33.610 --> 00:00:37.550
and so you can then type Python to see

16
00:00:37.550 --> 00:00:38.570
whether something comes up and you can

17
00:00:38.570 --> 00:00:39.800
see in my case I haven't actually

18
00:00:39.800 --> 00:00:42.410
installed anything but Python 2 was

19
00:00:42.410 --> 00:00:45.170
installed as a default program with this

20
00:00:45.170 --> 00:00:48.500
version of Ubuntu Linux. So version 2 as

21
00:00:48.500 --> 00:00:49.670
I mentioned isn't what we're going to be

22
00:00:49.670 --> 00:00:51.410
using in this course, so I'm going to do

23
00:00:51.410 --> 00:00:54.320
a ctrl D to exit out of that. The other

24
00:00:54.320 --> 00:00:55.940
thing we can check it is we can type

25
00:00:55.940 --> 00:00:58.010
Python and then the number 3 on the end

26
00:00:58.010 --> 00:01:01.010
without any spaces press enter and that

27
00:01:01.010 --> 00:01:02.840
also shows that we've got Python 3

28
00:01:02.840 --> 00:01:04.909
installed as well. So you can see there's

29
00:01:04.909 --> 00:01:07.430
two separate versions that are already installed

30
00:01:07.430 --> 00:01:10.280
meaning that unlike the Windows and Mac

31
00:01:10.280 --> 00:01:11.509
versions, we don't need to do any

32
00:01:11.509 --> 00:01:13.819
installation, we can use the version of

33
00:01:13.819 --> 00:01:16.520
Python that is already installed.

34
00:01:16.520 --> 00:01:18.560
Now Python does get updated and in fact if

35
00:01:18.560 --> 00:01:20.990
you went to the website right now for

36
00:01:20.990 --> 00:01:23.299
python.org, you'd see that the latest

37
00:01:23.299 --> 00:01:25.819
version is python 3 point six point two,

38
00:01:25.819 --> 00:01:27.889
so we've got a slightly older version

39
00:01:27.889 --> 00:01:29.600
but look it'll work just fine in this

40
00:01:29.600 --> 00:01:32.329
course and there's no sort of reason not

41
00:01:32.329 --> 00:01:35.090
to rush an upgrade and just a warning

42
00:01:35.090 --> 00:01:36.590
actually if you are thinking about doing

43
00:01:36.590 --> 00:01:38.779
that, be careful because python is

44
00:01:38.779 --> 00:01:41.689
heavily used within the GUI of many

45
00:01:41.689 --> 00:01:43.700
Linux distributions. So if you

46
00:01:43.700 --> 00:01:45.439
accidentally uninstalled Python or

47
00:01:45.439 --> 00:01:47.899
start you know installing different

48
00:01:47.899 --> 00:01:49.669
versions and so on and so forth you can

49
00:01:49.669 --> 00:01:51.649
get yourself into a situation where

50
00:01:51.649 --> 00:01:53.869
Linux won't boot or at least I won't

51
00:01:53.869 --> 00:01:55.340
have a GUI interface and that can be

52
00:01:55.340 --> 00:01:57.380
really difficult to recover from. So for

53
00:01:57.380 --> 00:01:59.329
that reason our recommendation is just

54
00:01:59.329 --> 00:02:02.090
to stick with the version of Python that

55
00:02:02.090 --> 00:02:04.520
is already in your Linux distribution,

56
00:02:04.520 --> 00:02:06.109
so long as it's three points something in

57
00:02:06.109 --> 00:02:08.030
my case you can see I've got three point

58
00:02:08.030 --> 00:02:10.099
five point two, we're actually good to go.

59
00:02:10.099 --> 00:02:12.290
Alright so I'm going to do a control d

60
00:02:12.290 --> 00:02:15.080
to get out of that, the other thing we

61
00:02:15.080 --> 00:02:17.540
need is something called idle which is

62
00:02:17.540 --> 00:02:18.380
an editor that

63
00:02:18.380 --> 00:02:19.760
we're going to be using at least early

64
00:02:19.760 --> 00:02:22.970
in the course to test some Python code

65
00:02:22.970 --> 00:02:25.880
out. So we can type in idle,

66
00:02:25.880 --> 00:02:28.670
idle and that doesn't work because it

67
00:02:28.670 --> 00:02:30.320
hasn't been installed and that would

68
00:02:30.320 --> 00:02:32.090
have been the older version that suits

69
00:02:32.090 --> 00:02:35.510
Python 2 and Python 3 would use something

70
00:02:35.510 --> 00:02:37.280
called idle 3 but you can see that's

71
00:02:37.280 --> 00:02:39.290
also not installed, so we need to go

72
00:02:39.290 --> 00:02:40.700
through the process of installing that

73
00:02:40.700 --> 00:02:43.070
for a Ubuntu Linux, so to do that I'm

74
00:02:43.070 --> 00:02:46.970
going to type in sudo apt - get a space

75
00:02:46.970 --> 00:02:48.770
between those two words space install

76
00:02:48.770 --> 00:02:54.950
space idle3 or idle3 press enter,

77
00:02:54.950 --> 00:03:01.330
I'm going to type my password, I can top it.

78
00:03:01.330 --> 00:03:04.520
Okay, so now go through and it's actually

79
00:03:04.520 --> 00:03:06.080
asked if I want to install it so I'm

80
00:03:06.080 --> 00:03:08.630
going to push yes or top y and press enter

81
00:03:08.630 --> 00:03:11.600
it's going to go ahead and install idle3

82
00:03:11.600 --> 00:03:13.760
for us and you'll be seeing how to use

83
00:03:13.760 --> 00:03:16.550
that program in the next video. Now it's

84
00:03:16.550 --> 00:03:18.110
complete as you can see there, so I can

85
00:03:18.110 --> 00:03:23.330
then just go ahead and type idle 3 and

86
00:03:23.330 --> 00:03:24.650
you can see that's now popped up a

87
00:03:24.650 --> 00:03:28.100
Python shell and within that window now

88
00:03:28.100 --> 00:03:29.900
we can start typing some Python commands

89
00:03:29.900 --> 00:03:31.970
but I'm going to finish the video here

90
00:03:31.970 --> 00:03:33.890
now. In the next video we'll go ahead and

91
00:03:33.890 --> 00:03:36.170
start using this Python shell to type in

92
00:03:36.170 --> 00:03:40.420
a few commands so see you in the next video.