How to install Flask on Oracle Linux 9.3
- 00:31 cat /etc/os-release
- 00:46 python3 --version
- 01:06 pip -V
- 01:19 dnf install python3-pip -y
- 02:26 pip -V
- 02:40 dnf install python3
- 03:11 python3 -m venv testenv
- 03:32 source testenv/bin/activate
- 03:52 pip install flask
- 04:13 flask --version
- 04:29 vim flasktest.py
- 04:54 python3 flasktest.py
- 05:21 http://127.0.0.1:5000/
{{postValue.id}}
To Install Flask On Oracle Linux 9.3
Introduction:
Flask is a free and open-source microframework for Python that assists developers in constructing secure, scalable, and easily maintainable web applications. It is built on Werkzeug and incorporates Jinja2 as its template engine.
Installation steps:
Step 1: Check the OS version by using the following command
[root@linuxhelp ~]# cat /etc/os-release
NAME="Oracle Linux Server"
VERSION="9.3"
ID="ol"
ID_LIKE="fedora"
VARIANT="Server"
VARIANT_ID="server"
VERSION_ID="9.3"
PLATFORM_ID="platform:el9"
PRETTY_NAME="Oracle Linux Server 9.3"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:oracle:linux:9:3:server"
HOME_URL="https://linux.oracle.com/"
BUG_REPORT_URL="https://github.com/oracle/oracle-linux"
ORACLE_BUGZILLA_PRODUCT="Oracle Linux 9"
ORACLE_BUGZILLA_PRODUCT_VERSION=9.3
ORACLE_SUPPORT_PRODUCT="Oracle Linux"
ORACLE_SUPPORT_PRODUCT_VERSION=9.3
Step 2: Now check the version of the python by using the following command
[root@linuxhelp ~]# python3 --version
Python 3.9.18
Step 3: Check the version of the pip by using the following command
[root@linuxhelp ~]# pip -V
bash: pip: command not found...
Install package 'python3-pip' to provide command 'pip'? [N/y] N
Step 4: If pip is not installed then Install it by using the following command
[root@linuxhelp ~]# dnf install python3-pip -y
Oracle Linux 9 BaseOS Latest (x86_64) 26 kB/s | 3.6 kB 00:00
Oracle Linux 9 BaseOS Latest (x86_64) 17 MB/s | 26 MB 00:01
Oracle Linux 9 Application Stream Packages (x86_64) 25 kB/s | 3.9 kB 00:00
Oracle Linux 9 Application Stream Packages (x86_64) 22 MB/s | 35 MB 00:01
Oracle Linux 9 UEK Release 7 (x86_64) 24 kB/s | 3.0 kB 00:00
Oracle Linux 9 UEK Release 7 (x86_64) 21 MB/s | 34 MB 00:01
Last metadata expiration check: 0:00:08 ago on Tuesday 04 June 2024 12:16:44 AM.
Dependencies resolved.
=====================================================================================================================================================
Package Architecture Version Repository Size
=====================================================================================================================================================
Installing:
python3-pip noarch 21.2.3-8.el9 ol9_appstream 2.9 M
Transaction Summary
=====================================================================================================================================================
Install 1 Package
Total download size: 2.9 M
Installed size: 8.7 M
Downloading Packages:
python3-pip-21.2.3-8.el9.noarch.rpm 10 MB/s | 2.9 MB 00:00
-----------------------------------------------------------------------------------------------------------------------------------------------------
Total 10 MB/s | 2.9 MB 00:00
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Installing : python3-pip-21.2.3-8.el9.noarch 1/1
Running scriptlet: python3-pip-21.2.3-8.el9.noarch 1/1
Verifying : python3-pip-21.2.3-8.el9.noarch 1/1
Installed:
python3-pip-21.2.3-8.el9.noarch
Complete!
Step 5: After the installation, check the pip version again by using the following command
[root@linuxhelp ~]# pip -V
pip 21.2.3 from /usr/lib/python3.9/site-packages/pip (python 3.9)
Step 6: Install the Virtualenv package by using the following command
[root@linuxhelp ~]# dnf install python3
Last metadata expiration check: 0:00:53 ago on Tuesday 04 June 2024 12:16:44 AM.
Package python3-3.9.18-1.el9_3.x86_64 is already installed.
Dependencies resolved.
=====================================================================================================================================================
Package Architecture Version Repository Size
=====================================================================================================================================================
Upgrading:
python-unversioned-command noarch 3.9.18-3.el9 ol9_appstream 8.3 k
python3 x86_64 3.9.18-3.el9 ol9_baseos_latest 30 k
python3-libs x86_64 3.9.18-3.el9 ol9_baseos_latest 9.6 M
Transaction Summary
=====================================================================================================================================================
Upgrade 3 Packages
Total download size: 9.7 M
Is this ok [y/N]: y
Downloading Packages:
(1/3): python-unversioned-command-3.9.18-3.el9.noarch.rpm 37 kB/s | 8.3 kB 00:00
(2/3): python3-3.9.18-3.el9.x86_64.rpm 127 kB/s | 30 kB 00:00
(3/3): python3-libs-3.9.18-3.el9.x86_64.rpm 15 MB/s | 9.6 MB 00:00
-----------------------------------------------------------------------------------------------------------------------------------------------------
Total 15 MB/s | 9.7 MB 00:00
Running transaction check
Transaction check succeeded.
Running transaction test
Transaction test succeeded.
Running transaction
Preparing : 1/1
Upgrading : python3-libs-3.9.18-3.el9.x86_64 1/6
Upgrading : python-unversioned-command-3.9.18-3.el9.noarch 2/6
Upgrading : python3-3.9.18-3.el9.x86_64 3/6
Cleanup : python3-3.9.18-1.el9_3.x86_64 4/6
Cleanup : python-unversioned-command-3.9.18-1.el9_3.noarch 5/6
Cleanup : python3-libs-3.9.18-1.el9_3.x86_64 6/6
Running scriptlet: python3-libs-3.9.18-1.el9_3.x86_64 6/6
Verifying : python3-3.9.18-3.el9.x86_64 1/6
Verifying : python3-3.9.18-1.el9_3.x86_64 2/6
Verifying : python3-libs-3.9.18-3.el9.x86_64 3/6
Verifying : python3-libs-3.9.18-1.el9_3.x86_64 4/6
Verifying : python-unversioned-command-3.9.18-3.el9.noarch 5/6
Verifying : python-unversioned-command-3.9.18-1.el9_3.noarch 6/6
Upgraded:
python-unversioned-command-3.9.18-3.el9.noarch python3-3.9.18-3.el9.x86_64 python3-libs-3.9.18-3.el9.x86_64
Complete!
Step 7: Create a new python virtual environment by using the following command
[root@linuxhelp ~]# python3 -m venv testenv
Step 8: Once the virtual environment is created, run the following command to activate it.
[root@linuxhelp ~]# source testenv/bin/activate
(testenv) [root@linuxhelp ~]#
Step 9: Now install Flask by using pip install command
(testenv) [root@linuxhelp ~]# pip install flask
Collecting flask
Downloading flask-3.0.3-py3-none-any.whl (101 kB)
|████████████████████████████████| 101 kB 1.1 MB/s
Collecting itsdangerous>=2.1.2
Downloading itsdangerous-2.2.0-py3-none-any.whl (16 kB)
Collecting blinker>=1.6.2
Downloading blinker-1.8.2-py3-none-any.whl (9.5 kB)
Collecting importlib-metadata>=3.6.0
Downloading importlib_metadata-7.1.0-py3-none-any.whl (24 kB)
Collecting Werkzeug>=3.0.0
Downloading werkzeug-3.0.3-py3-none-any.whl (227 kB)
|████████████████████████████████| 227 kB 3.5 MB/s
Collecting click>=8.1.3
Downloading click-8.1.7-py3-none-any.whl (97 kB)
|████████████████████████████████| 97 kB 4.1 MB/s
Collecting Jinja2>=3.1.2
Downloading jinja2-3.1.4-py3-none-any.whl (133 kB)
|████████████████████████████████| 133 kB 6.5 MB/s
Collecting zipp>=0.5
Downloading zipp-3.19.1-py3-none-any.whl (9.0 kB)
Collecting MarkupSafe>=2.0
Downloading MarkupSafe-2.1.5-cp39-cp39-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (25 kB)
Installing collected packages: zipp, MarkupSafe, Werkzeug, Jinja2, itsdangerous, importlib-metadata, click, blinker, flask
Successfully installed Jinja2-3.1.4 MarkupSafe-2.1.5 Werkzeug-3.0.3 blinker-1.8.2 click-8.1.7 flask-3.0.3 importlib-metadata-7.1.0 itsdangerous-2.2.0 zipp-3.19.1
WARNING: You are using pip version 21.2.3; however, version 24.0 is available.
You should consider upgrading via the '/root/testenv/bin/python3 -m pip install --upgrade pip' command.
Step 10: After the installation check the version of the flask by using the following command
(testenv) [root@linuxhelp ~]# flask --version
Python 3.9.18
Flask 3.0.3
Werkzeug 3.0.3
Step 11: Now create a simple Python code file that will import Flash to print a simple Hello message by using the following command.
(testenv) [root@linuxhelp ~]# vim flasktest.py
Add those following Command
from flask import Flask
app = Flask(__name__)
@app.route('/')
def hello_world():
return 'Hello, Flask!'
if __name__ == '__main__':
app.run()
Step 12: Run the file by using the python command.
(testenv) [root@linuxhelp ~]# python3 flasktest.py
* Serving Flask app 'flasktest'
* Debug mode: off
WARNING: This is a development server. Do not use it in a production deployment. Use a production WSGI server instead.
* Running on http://127.0.0.1:5000
Press CTRL+C to quit
127.0.0.1 - - [04/Jun/2024 00:20:52] "GET / HTTP/1.1" 200 -
127.0.0.1 - - [04/Jun/2024 00:20:52] "GET /favicon.ico HTTP/1.1" 404 -
Step 13: Now go to the browser and search the following link http:/127.0.0.1:5000
Conclusion:
We have reached the end of this article. In this guide, we have walked you through the steps required to install Flask on Oracle Linux 9.3. Your feedback is much welcome.
Comments ( 0 )
No comments available