1
00:00:00,660 --> 00:00:06,420
Hello, friends, in this video, we shall see how to set up the environment that is required for the

2
00:00:06,420 --> 00:00:09,750
development of an application using the flight framework.

3
00:00:10,050 --> 00:00:12,390
So setting the environment.

4
00:00:15,760 --> 00:00:20,080
There are certain prerequisites for setting up the environment.

5
00:00:20,500 --> 00:00:31,000
One is that you should have a Python version, two one six are, you know, even if the flask environment

6
00:00:31,000 --> 00:00:40,900
or flask package as such works for Python three point three onwards, even if it doesn't work properly,

7
00:00:41,260 --> 00:00:47,200
some of the extensions that you may want to use along with the flask, they are not properly ported

8
00:00:47,650 --> 00:00:51,820
for the next or the later versions of Python.

9
00:00:52,090 --> 00:01:00,520
So therefore it is always recommended that you should use or you should install the flat framework on

10
00:01:00,520 --> 00:01:02,220
the top of Python two point seven.

11
00:01:02,890 --> 00:01:06,760
So that is the recommended version of Python that you should use for.

12
00:01:12,290 --> 00:01:20,840
Now, in order to, you know, develop flask application, again, another recommendation is that you

13
00:01:20,840 --> 00:01:23,660
should install a virtual environment of Python.

14
00:01:24,290 --> 00:01:27,050
So this is something which is very special to Python.

15
00:01:28,100 --> 00:01:40,160
The use of virtual environment allows you to test your environment or your application in isolated environment

16
00:01:40,610 --> 00:01:47,340
so that there might be a certain case where different libraries may be conflicting with each other.

17
00:01:47,720 --> 00:01:55,650
So in order to remove the possibility of this conflict, it is always better to install a virtual environment.

18
00:01:56,810 --> 00:02:06,480
So this virtual environment can allow you to compare and test the environment side by side.

19
00:02:08,060 --> 00:02:12,890
Well, how to install that by using a utility called Pip?

20
00:02:13,810 --> 00:02:16,130
Now, Pip is a python.

21
00:02:17,670 --> 00:02:25,560
Package installer, Stolen Bank, which stands for Biton Package in stolen, not this paper utility

22
00:02:26,670 --> 00:02:36,300
for the Python two point seven point nine onwards people utility is, you know, Shipherd along with

23
00:02:36,300 --> 00:02:38,340
their standard Python distribution.

24
00:02:40,340 --> 00:02:49,670
But if you are having two point seven point eight or less than that Biton version two one seven point

25
00:02:49,670 --> 00:02:58,060
eight or less than that, then the utility is not present in the default installation of Python.

26
00:02:58,370 --> 00:02:59,630
So naturally, what will I do?

27
00:02:59,840 --> 00:03:01,940
You'll have to install the itself first.

28
00:03:03,340 --> 00:03:08,170
How to install pipe, get hold of a file called as get

29
00:03:10,430 --> 00:03:24,220
dogpile from the Python package index by B.I and then run this by saying Python get dorper.

30
00:03:25,120 --> 00:03:26,850
So what will happen now?

31
00:03:26,860 --> 00:03:33,930
The BP utility will be installed in the scripts directly off your Python Python folder wanted to install.

32
00:03:34,270 --> 00:03:42,190
Then you can, you know, run this command from the command, from PIP, install virtual EMV.

33
00:03:43,770 --> 00:03:45,730
So the virtual environment will be set up.

34
00:03:47,350 --> 00:03:53,350
Of course, this come on, nurse, an administrator privilege, especially if you are trying to do this

35
00:03:53,350 --> 00:04:02,860
under Linux or Mac OS, so if you are doing it on Linux or Mac OS, you will have to add Suto before

36
00:04:02,860 --> 00:04:07,870
it sudo pip install virtual EMV.

37
00:04:07,870 --> 00:04:11,620
That will be the command that you will use on certain.

38
00:04:12,100 --> 00:04:17,680
If you are on windows, then you have to log in as an administrator to execute that certain standard

39
00:04:17,680 --> 00:04:23,740
Linux package like you want to have their own package manager, like for example, app.

40
00:04:24,490 --> 00:04:31,810
So if you are on Ubuntu Linux, you just issuing commands to do Atget install virtual EMV so the virtual

41
00:04:31,810 --> 00:04:33,320
environment will be set up.

42
00:04:33,820 --> 00:04:40,620
Now this virtual environment will will be used to install or create an environment for the developer,

43
00:04:40,750 --> 00:04:42,220
for the installation of the flask.

44
00:04:46,950 --> 00:04:52,820
So once the virtual environment is installed now inside that virtual environment, you will install.

45
00:04:54,150 --> 00:05:03,030
So in order to install or create a new virtual environment, all you have to do is to create a new directly

46
00:05:03,390 --> 00:05:04,170
or folder.

47
00:05:04,440 --> 00:05:05,970
I'm calling it a new project.

48
00:05:05,980 --> 00:05:08,980
New project good.

49
00:05:09,030 --> 00:05:10,330
Or log in to that directive.

50
00:05:10,350 --> 00:05:15,230
I think Cindy and this virtual EMV is not already installed.

51
00:05:15,480 --> 00:05:20,730
So just the virtual EMV V and the V is the name of my virtual involvement.

52
00:05:21,390 --> 00:05:22,050
So what will happen?

53
00:05:22,650 --> 00:05:27,630
The inside of the DMV directly inside a new project, new project.

54
00:05:27,930 --> 00:05:37,110
All the required utilities and modules for a independent Pythonic distribution by Clapperton installation

55
00:05:37,110 --> 00:05:40,210
will be created inside this V v in V folder.

56
00:05:41,490 --> 00:05:44,580
So now that it is that it is there, it is done.

57
00:05:44,790 --> 00:05:53,010
The virtual environment and the utility is required for the execution of Python are installed.

58
00:05:53,850 --> 00:05:55,380
Now you can activate that.

59
00:05:55,380 --> 00:06:02,910
You will activate that environment by saying the NIBIN activate this command is especially relevant

60
00:06:02,910 --> 00:06:04,190
to the Linux distribution.

61
00:06:05,220 --> 00:06:10,290
So if you are on Linux, you said just that we and we will activate the

62
00:06:13,170 --> 00:06:15,990
newly created virtual environment will be activated.

63
00:06:19,010 --> 00:06:20,090
If you are on Windows.

64
00:06:22,300 --> 00:06:28,870
And if you are creating a virtual environment in the direction of a new project this weekend, we do

65
00:06:28,880 --> 00:06:31,220
the 3D created inside new project.

66
00:06:31,420 --> 00:06:32,170
There is a script.

67
00:06:32,170 --> 00:06:34,490
SolarReserve that and then there is an activity.

68
00:06:34,840 --> 00:06:36,070
So this is a document.

69
00:06:38,490 --> 00:06:40,660
Yankees, come on, it will be accurate.

70
00:06:40,780 --> 00:06:42,090
You know you are.

71
00:06:43,670 --> 00:06:50,010
You have installed a virtual environment, you have activated it now inside that virtual environment

72
00:06:50,040 --> 00:06:58,260
just to install flasks so the flask will be installed in the our current version in order.

73
00:06:58,560 --> 00:07:04,750
So this is all the activity that you need to do in order to set up the flask and warm it in your computer.

74
00:07:05,010 --> 00:07:11,700
Now, all these activities I will actually demonstrate to you with the help of the activities that I

75
00:07:11,700 --> 00:07:20,430
will do in front of you the recommended version of Python for installation of Lasky's Python two point

76
00:07:20,430 --> 00:07:20,820
seven.

77
00:07:21,930 --> 00:07:28,200
So in front of you, I have opened the idle shell of Python two point seven point one two.

78
00:07:28,680 --> 00:07:29,640
And this is the.

79
00:07:30,950 --> 00:07:32,800
Python thrown in front of me.

80
00:07:32,880 --> 00:07:35,000
If I write any valeted.

81
00:07:36,390 --> 00:07:38,550
Biton statement that will be.

82
00:07:40,560 --> 00:07:41,730
Properly executed.

83
00:07:41,790 --> 00:07:42,690
Which means that.

84
00:07:43,630 --> 00:07:47,230
In this machine, batons two one zero point one two is available.

85
00:07:49,360 --> 00:07:56,580
You can also verify this by executing the python interpreter from the command line.

86
00:08:00,000 --> 00:08:07,020
So in this machine, the bottom 270 kolon slashed by Tonto's to seven is the installation, the reward,

87
00:08:07,290 --> 00:08:08,400
one to seven.

88
00:08:09,120 --> 00:08:17,870
So from this command prompt, I will start the Python interpreter just by issuing Python Command.

89
00:08:18,030 --> 00:08:21,570
You see that the python prompt appears here.

90
00:08:21,570 --> 00:08:23,880
Also, I can execute any.

91
00:08:25,170 --> 00:08:25,430
In.

92
00:08:26,790 --> 00:08:28,410
Wildhorn statement like this.

93
00:08:30,360 --> 00:08:34,400
So which means that I don't have a label in this machine.

94
00:08:40,400 --> 00:08:44,990
Next is for the installation of different packages.

95
00:08:46,170 --> 00:08:49,980
Despite our distribution, must help keep utility available.

96
00:08:51,850 --> 00:09:00,640
For the pattern distributions after Python two point seven point nine BP utilities already present in

97
00:09:00,640 --> 00:09:05,910
the Python bundle, so just verify whether this is available or not.

98
00:09:05,920 --> 00:09:11,910
Otherwise, you may have to install the capability by using the get Pip Courtney while.

99
00:09:12,930 --> 00:09:19,170
How to find out whether it is present or not, just issue a simple task to search.

100
00:09:20,540 --> 00:09:22,010
All the occurrences of.

101
00:09:24,980 --> 00:09:29,570
By saying, yes, so if I see.

102
00:09:31,380 --> 00:09:38,640
This Nordyke is available in the scripts subdirectory of Bitauto seven, so it is present.

103
00:09:40,010 --> 00:09:41,270
Now that it is present.

104
00:09:42,220 --> 00:09:48,070
I have to see whether the virtual environment is present or not, so.

105
00:09:49,260 --> 00:09:50,280
If I try to.

106
00:09:51,340 --> 00:09:53,170
Install it by using the pipe.

107
00:09:53,200 --> 00:09:54,340
What happens, let us see.

108
00:09:55,820 --> 00:09:56,540
If I say.

109
00:09:58,250 --> 00:10:04,690
Scripts, because there is a folder in which the people, utilities present people.

110
00:10:05,610 --> 00:10:06,420
Install.

111
00:10:08,330 --> 00:10:10,450
Virtual envy.

112
00:10:12,470 --> 00:10:13,160
What happens?

113
00:10:17,390 --> 00:10:19,220
The requirements are already satisfied.

114
00:10:19,250 --> 00:10:23,090
That means the virtual environment is already set up in this.

115
00:10:25,610 --> 00:10:30,590
You can also verify the presence of virtual environment by running the same search command.

116
00:10:40,350 --> 00:10:49,080
There is inside the scripts, the virtual envelope is already present, so that.

117
00:10:50,400 --> 00:10:54,960
Prerequisite, prerequisite or requirement is already fulfilled.

118
00:10:58,030 --> 00:11:04,870
Now we shall use this virtual inverarity to create a virtual environment for that.

119
00:11:06,230 --> 00:11:08,170
Let me create a new folder.

120
00:11:10,340 --> 00:11:11,540
I will call it as.

121
00:11:16,520 --> 00:11:17,920
Flask envy.

122
00:11:23,160 --> 00:11:25,440
Let us log into that directly.

123
00:11:30,340 --> 00:11:37,240
And now uses virtual Ironweed or Yuxi to set up a virtual environment.

124
00:11:37,990 --> 00:11:40,180
So where is that virtual environment?

125
00:11:40,330 --> 00:11:41,490
Virtual N.V.?

126
00:11:41,890 --> 00:11:42,910
It is inside.

127
00:11:47,200 --> 00:11:48,730
This directly.

128
00:11:51,750 --> 00:11:52,740
We are.

129
00:11:58,290 --> 00:12:03,430
And then you the name of the virtual reality or virtual environment that you want to set up.

130
00:12:03,450 --> 00:12:04,950
I use the same name.

131
00:12:15,090 --> 00:12:18,500
So the virtual environment will now be set up.

132
00:12:22,990 --> 00:12:30,790
It is collecting the requirements set up to speed, will, etc., and those will be set up inside the

133
00:12:30,790 --> 00:12:32,950
flat invigilator inside the.

134
00:12:33,870 --> 00:12:40,730
Flaws in that we already created, so a folder of this name will be created and inside which all the

135
00:12:40,800 --> 00:12:41,790
quadroons will be.

136
00:12:43,130 --> 00:12:46,370
You know, installed so this the installation is complete.

137
00:12:50,550 --> 00:12:58,920
So now that the virtual environment named as class envy is set up, let us go into that directly and

138
00:12:58,920 --> 00:13:04,580
see what all the resources have been installed inside that folder.

139
00:13:07,260 --> 00:13:12,950
So this is the pattern for the way in which the virtual environment is set up by the same name Laskey,

140
00:13:13,020 --> 00:13:18,060
and this is the virtual reality folder if you expand this.

141
00:13:19,030 --> 00:13:27,520
You will find that this all include directly, live directly and scripts directly is these folders are

142
00:13:27,520 --> 00:13:29,650
created to go inside the scripts.

143
00:13:31,070 --> 00:13:31,790
This is the.

144
00:13:32,960 --> 00:13:41,270
All utilities that are required are, you know, available in this is an activity in a batch file that

145
00:13:41,270 --> 00:13:47,960
is a deactivated batch file and then there is also a local paper also is present if you want to install

146
00:13:48,260 --> 00:13:48,680
some.

147
00:13:50,510 --> 00:13:55,790
In packages inside this virtual environment, you can use these people, not you, you do not have to

148
00:13:55,790 --> 00:14:03,710
use the global pipe that is available in Python to seven additional directly in order to install something

149
00:14:03,710 --> 00:14:05,610
in this virtual environment to use these people.

150
00:14:05,900 --> 00:14:12,020
And then there is also a python interpreter which is available for the local environment or virtual

151
00:14:12,020 --> 00:14:12,510
environment.

152
00:14:12,890 --> 00:14:23,810
So this is all about the installation of virtual environment, which is the first part of our installation

153
00:14:23,810 --> 00:14:25,310
procedure in the next part.

154
00:14:26,330 --> 00:14:35,090
We shall see how to activate this virtual environment and install the package inside that.

155
00:14:37,010 --> 00:14:38,990
So this is the folder in which the.

156
00:14:40,000 --> 00:14:41,890
Virtual environment has been set up.

157
00:14:45,210 --> 00:14:49,270
This is the name of the virtual environment directly Flask N.V..

158
00:14:53,360 --> 00:15:00,270
Inside, which there is a scripts folder and inside service that is in activate, not bad.

159
00:15:00,710 --> 00:15:01,550
So if I say.

160
00:15:04,170 --> 00:15:05,550
Go into this.

161
00:15:06,860 --> 00:15:09,560
There is a script folder.

162
00:15:14,090 --> 00:15:14,960
And there is a.

163
00:15:16,740 --> 00:15:22,680
This activity not bad, so I have to invoke this to activate the.

164
00:15:24,570 --> 00:15:25,050
This.

165
00:15:26,150 --> 00:15:32,390
Virtual environment named as Laskey in Israel go back to the parent Folden.

166
00:15:34,560 --> 00:15:36,600
And then say flask.

167
00:15:39,040 --> 00:15:40,870
Lask N.V..

168
00:15:42,560 --> 00:15:43,520
Scripts.

169
00:15:45,730 --> 00:15:47,020
And then stick to it.

170
00:15:49,970 --> 00:15:50,300
The.

171
00:15:53,390 --> 00:15:54,050
Bagis.

172
00:15:55,450 --> 00:16:03,760
So you can find that just before the command prompt, the name of the virtual environment is appearing

173
00:16:03,760 --> 00:16:04,600
in the brackets.

174
00:16:05,530 --> 00:16:11,240
So now we are in the virtual environment from which you can invoke the python interpreter.

175
00:16:11,260 --> 00:16:15,410
Also, if you find that in the scripts folder, there is a python or the.

176
00:16:16,420 --> 00:16:21,060
So if I start this python, python will start in the virtual environment.

177
00:16:27,460 --> 00:16:28,150
Like this.

178
00:16:29,660 --> 00:16:35,910
So this is Python interpreter is now working in the virtual environment called this flask EMV.

179
00:16:36,950 --> 00:16:37,850
Come out of this.

180
00:16:40,730 --> 00:16:44,300
And come out of the virtual environment by calling.

181
00:16:45,940 --> 00:16:46,750
Deactivate.

182
00:16:51,480 --> 00:16:53,100
So we'll come back to the problem.

183
00:16:53,550 --> 00:16:54,420
So this is how.

184
00:16:55,740 --> 00:17:02,780
The second part of the virtual environment installation, how to activate, how to start python interpreter

185
00:17:02,780 --> 00:17:05,090
in the virtual environment and how to deactivate.

186
00:17:05,090 --> 00:17:07,250
That is Alwiya C.

187
00:17:09,670 --> 00:17:12,010
Then we come to the installation of Lask.

188
00:17:13,790 --> 00:17:15,020
So first.

189
00:17:17,180 --> 00:17:19,780
Activate the virtual environment.

190
00:17:25,020 --> 00:17:26,430
By calling the to.

191
00:17:28,260 --> 00:17:28,920
Batch file.

192
00:17:31,770 --> 00:17:33,390
And then run the.

193
00:17:35,610 --> 00:17:37,470
BP utility to install flask.

194
00:17:41,540 --> 00:17:43,810
It is present in the scripts folder.

195
00:17:46,440 --> 00:17:48,720
People install flask.

196
00:17:58,170 --> 00:18:05,400
All the dependencies and the modules inside the flask package will now be installed.

197
00:18:11,100 --> 00:18:16,230
Lastly, to sing successfully installed all the dependencies.

198
00:18:17,470 --> 00:18:29,410
Ginge and Works, Zogu, etc., are all installed successfully inside the virtual environment, so the

199
00:18:29,410 --> 00:18:30,520
installation is complete.

200
00:18:30,550 --> 00:18:34,570
I will now invoke the python prompt.

201
00:18:36,000 --> 00:18:39,870
And then I will say, sorry, import.

202
00:18:41,900 --> 00:18:43,170
Import flask.

203
00:18:45,410 --> 00:18:54,020
So now the flask is already present in our virtual environment, now that the flask is imported, we

204
00:18:54,020 --> 00:19:00,290
can now go ahead and use the flask framework for other activities.