Archive for the ‘Python Administrator’ tag
OracleDB Python Tutorial 1
This shows you how to get Python working with the Oracle Database 23c in Docker or Podman on Ubuntu. You can find useful connection strings for this in Oracle Database Free Get Started.
- First step requires you to install the pip3/span> utility on Ubuntu.
sudo apt install -y python3-pip
Display detailed console log →
Reading package lists... Done Building dependency tree... Done Reading state information... Done The following additional packages will be installed: binutils binutils-common binutils-x86-64-linux-gnu build-essential dpkg-dev fakeroot g++ g++-11 gcc gcc-11 javascript-common libalgorithm-diff-perl libalgorithm-diff-xs-perl libalgorithm-merge-perl libasan6 libbinutils libc-dev-bin libc-devtools libc6-dev libcc1-0 libcrypt-dev libctf-nobfd0 libctf0 libdpkg-perl libexpat1-dev libfakeroot libfile-fcntllock-perl libgcc-11-dev libitm1 libjs-jquery libjs-sphinxdoc libjs-underscore liblsan0 libnsl-dev libpython3-dev libpython3.10-dev libquadmath0 libstdc++-11-dev libtirpc-dev libtsan0 libubsan1 linux-libc-dev lto-disabled-list make manpages-dev python3-dev python3-distutils python3-setuptools python3-wheel python3.10-dev rpcsvc-proto zlib1g-dev Suggested packages: binutils-doc debian-keyring g++-multilib g++-11-multilib gcc-11-doc gcc-multilib autoconf automake libtool flex bison gcc-doc gcc-11-multilib gcc-11-locales apache2 | lighttpd | httpd glibc-doc bzr libstdc++-11-doc make-doc python-setuptools-doc The following NEW packages will be installed: binutils binutils-common binutils-x86-64-linux-gnu build-essential dpkg-dev fakeroot g++ g++-11 gcc gcc-11 javascript-common libalgorithm-diff-perl libalgorithm-diff-xs-perl libalgorithm-merge-perl libasan6 libbinutils libc-dev-bin libc-devtools libc6-dev libcc1-0 libcrypt-dev libctf-nobfd0 libctf0 libdpkg-perl libexpat1-dev libfakeroot libfile-fcntllock-perl libgcc-11-dev libitm1 libjs-jquery libjs-sphinxdoc libjs-underscore liblsan0 libnsl-dev libpython3-dev libpython3.10-dev libquadmath0 libstdc++-11-dev libtirpc-dev libtsan0 libubsan1 linux-libc-dev lto-disabled-list make manpages-dev python3-dev python3-distutils python3-pip python3-setuptools python3-wheel python3.10-dev rpcsvc-proto zlib1g-dev 0 upgraded, 53 newly installed, 0 to remove and 9 not upgraded. Need to get 62.2 MB of archives. After this operation, 220 MB of additional disk space will be used. Get:1 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 binutils-common amd64 2.38-4ubuntu2.3 [222 kB] Get:2 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libbinutils amd64 2.38-4ubuntu2.3 [662 kB] Get:3 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libctf-nobfd0 amd64 2.38-4ubuntu2.3 [107 kB] Get:4 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libctf0 amd64 2.38-4ubuntu2.3 [103 kB] Get:5 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 binutils-x86-64-linux-gnu amd64 2.38-4ubuntu2.3 [2,327 kB] Get:6 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 binutils amd64 2.38-4ubuntu2.3 [3,190 B] Get:7 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libc-dev-bin amd64 2.35-0ubuntu3.5 [20.3 kB] Get:8 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 linux-libc-dev amd64 5.15.0-91.101 [1,332 kB] Get:9 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 libcrypt-dev amd64 1:4.4.27-1 [112 kB] Get:10 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 rpcsvc-proto amd64 1.4.2-0ubuntu6 [68.5 kB] Get:11 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libtirpc-dev amd64 1.3.2-2ubuntu0.1 [192 kB] Get:12 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 libnsl-dev amd64 1.3.0-2build2 [71.3 kB] Get:13 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libc6-dev amd64 2.35-0ubuntu3.5 [2,098 kB] Get:14 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libcc1-0 amd64 12.3.0-1ubuntu1~22.04 [48.3 kB] Get:15 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libitm1 amd64 12.3.0-1ubuntu1~22.04 [30.2 kB] Get:16 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libasan6 amd64 11.4.0-1ubuntu1~22.04 [2,282 kB] Get:17 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 liblsan0 amd64 12.3.0-1ubuntu1~22.04 [1,069 kB] Get:18 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libtsan0 amd64 11.4.0-1ubuntu1~22.04 [2,260 kB] Get:19 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libubsan1 amd64 12.3.0-1ubuntu1~22.04 [976 kB] Get:20 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libquadmath0 amd64 12.3.0-1ubuntu1~22.04 [154 kB] Get:21 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libgcc-11-dev amd64 11.4.0-1ubuntu1~22.04 [2,517 kB] Get:22 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 gcc-11 amd64 11.4.0-1ubuntu1~22.04 [20.1 MB] Get:23 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 gcc amd64 4:11.2.0-1ubuntu1 [5,112 B] Get:24 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libstdc++-11-dev amd64 11.4.0-1ubuntu1~22.04 [2,101 kB] Get:25 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 g++-11 amd64 11.4.0-1ubuntu1~22.04 [11.4 MB] Get:26 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 g++ amd64 4:11.2.0-1ubuntu1 [1,412 B] Get:27 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 make amd64 4.3-4.1build1 [180 kB] Get:28 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libdpkg-perl all 1.21.1ubuntu2.2 [237 kB] Get:29 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 lto-disabled-list all 24 [12.5 kB] Get:30 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 dpkg-dev all 1.21.1ubuntu2.2 [922 kB] Get:31 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 build-essential amd64 12.9ubuntu3 [4,744 B] Get:32 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 libfakeroot amd64 1.28-1ubuntu1 [31.5 kB] Get:33 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 fakeroot amd64 1.28-1ubuntu1 [60.4 kB] Get:34 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 javascript-common all 11+nmu1 [5,936 B] Get:35 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 libalgorithm-diff-perl all 1.201-1 [41.8 kB] Get:36 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 libalgorithm-diff-xs-perl amd64 0.04-6build3 [11.9 kB] Get:37 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 libalgorithm-merge-perl all 0.08-3 [12.0 kB] Get:38 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libc-devtools amd64 2.35-0ubuntu3.5 [28.9 kB] Get:39 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libexpat1-dev amd64 2.4.7-1ubuntu0.2 [147 kB] Get:40 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 libfile-fcntllock-perl amd64 0.22-3build7 [33.9 kB] Get:41 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 libjs-jquery all 3.6.0+dfsg+~3.5.13-1 [321 kB] Get:42 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 libjs-underscore all 1.13.2~dfsg-2 [118 kB] Get:43 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 libjs-sphinxdoc all 4.3.2-1 [139 kB] Get:44 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 zlib1g-dev amd64 1:1.2.11.dfsg-2ubuntu9.2 [164 kB] Get:45 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libpython3.10-dev amd64 3.10.12-1~22.04.3 [4,762 kB] Get:46 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 libpython3-dev amd64 3.10.6-1~22.04 [7,166 B] Get:47 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 manpages-dev all 5.10-1ubuntu1 [2,309 kB] Get:48 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 python3.10-dev amd64 3.10.12-1~22.04.3 [507 kB] Get:49 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 python3-distutils all 3.10.8-1~22.04 [139 kB] Get:50 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 python3-dev amd64 3.10.6-1~22.04 [26.0 kB] Get:51 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 python3-setuptools all 59.6.0-1.2ubuntu0.22.04.1 [339 kB] Get:52 http://us.archive.ubuntu.com/ubuntu jammy-updates/universe amd64 python3-wheel all 0.37.1-2ubuntu0.22.04.1 [32.0 kB] Get:53 http://us.archive.ubuntu.com/ubuntu jammy-updates/universe amd64 python3-pip all 22.0.2+dfsg-1ubuntu0.4 [1,305 kB] Fetched 62.2 MB in 35s (1,781 kB/s) Extracting templates from packages: 100% Selecting previously unselected package binutils-common:amd64. 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- Second step requires that you pip3 install the oracledb library:
sudo pip3 install oracledb --upgrade
Display detailed console log →
Defaulting to user installation because normal site-packages is not writeable Collecting oracledb Downloading oracledb-1.4.2-cp310-cp310-manylinux_2_17_x86_64.manylinux2014_x86_64.whl (8.6 MB) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 8.6/8.6 MB 2.7 MB/s eta 0:00:00 Requirement already satisfied: cryptography>=3.2.1 in /usr/lib/python3/dist-packages (from oracledb) (3.4.8) Installing collected packages: oracledb Successfully installed oracledb-1.4.2 - Third step requires you write a Python program to test your connection to Oracle Database 23c Free, like:
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#!/usr/bin/python # Import the Oracle library. import oracledb try: # Create a connection to local Docker or Podman installation. db = oracledb.connect(user='c##student', password='student', dsn='localhost:51521/FREE') # Print a connection message. print("Connected to the Oracle", db.version, "database.") except oracledb.DatabaseError as e: error, = e.args print(sys.stderr, "Oracle-Error-Code:", error.code) print(sys.stderr, "Oracle-Error-Message:", error.message) finally: # Close connection. db.close()
The 51521 port is the recommended port when setting up Docker or Podman services, however, it can be set to any port above 1024.
It should print:
Connected to the Oracle 23.3.0.23.9 database.
- Fourth step requires you write a Python program to test querying data from an Oracle Database 23c Free instance. I created the following avenger table and seeded it with six Avengers.
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/* Conditionally drop the table. */ DROP TABLE IF EXISTS avenger; /* Create the table. */ CREATE TABLE avenger ( avenger_id NUMBER , first_name VARCHAR2(20) , last_name VARCHAR2(20) , character_name VARCHAR2(20)); /* Seed the table with data. */ INSERT INTO avenger VALUES (1,'Anthony','Stark','Iron Man'); INSERT INTO avenger VALUES (2,'Thor','Odinson','God of Thunder'); INSERT INTO avenger VALUES (3,'Steven','Rogers','Captain America'); INSERT INTO avenger VALUES (4,'Bruce','Banner','Hulk'); INSERT INTO avenger VALUES (5,'Clinton','Barton','Hawkeye'); INSERT INTO avenger VALUES (6,'Natasha','Romanoff','Black Widow');
Then, I extended the program logic to include a cursor and for loop to read the values from the avenger table:
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#!/usr/bin/python # Import the Oracle library. import oracledb try: # Create a connection to local Docker or Podman installation. db = oracledb.connect(user='c##student', password='student', dsn='localhost:51521/FREE') # Create a cursor. cursor = db.cursor() # Execute a query. cursor.execute("SELECT character_name " + ", first_name " + ", last_name " + "FROM avenger " + "ORDER BY character_name") # Read the contents of the cursor. for row in cursor: print(row[0] + ':',row[2] + ',',row[1]) except oracledb.DatabaseError as e: error, = e.args print(sys.stderr, "Oracle-Error-Code:", error.code) print(sys.stderr, "Oracle-Error-Message:", error.message) finally: # Close cursor and connection. cursor.close() db.close()
The 51521 port is the recommended port when setting up Docker or Podman services, however, it can be set to any port above 1024.
It should print:
Black Widow: Romanoff, Natasha Captain America: Rogers, Steven God of Thunder: Odinson, Thor Hawkeye: Barton, Clinton Hulk: Banner, Bruce Iron Man: Stark, Anthony
- Fifth step requires you write a Python program to test querying data filtered by a local variable from an Oracle Database 23c Free instance. This example looks only for the Hulk among the six Avengers.
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#!/usr/bin/python # Import the Oracle library. import oracledb try: # Create a connection to local Docker or Podman installation. db = oracledb.connect(user='c##student', password='student', dsn='localhost:51521/FREE') # Create a cursor. cursor = db.cursor() # Execute a query. stmt = "SELECT character_name " \ ", first_name " \ ", last_name " \ "FROM avenger " \ "WHERE character_name = :avenger " \ "ORDER BY character_name" # Execute with bind variable. cursor.execute(stmt, avenger = "Hulk") # Read the contents of the cursor. for row in cursor: print(row[0] + ':',row[2] + ',',row[1]) except oracledb.DatabaseError as e: error, = e.args print(sys.stderr, "Oracle-Error-Code:", error.code) print(sys.stderr, "Oracle-Error-Message:", error.message) finally: # Close cursor and connection. cursor.close() db.close()
It should print:
Hulk: Banner, Bruce
As always, I hope this puts everything together for setting up Python with Oracle Database 23c Free.
Install PyGame on Fedora
The PyGame library is a wonderful tool for building games with Python. It lets you accomplish a great deal by simply managing events. You need to understand how to use Python functions, modules, and events to build games with this Python library.
You can download and install the PyGame library with the yum utility like this:
yum install -y pygame |
It should generate the following list when you install it as the root user:
Loaded plugins: langpacks, refresh-packagekit Available Packages pygame.x86_64 1.9.1-14.fc20 fedora [root@localhost ~]# yum install -y pygame Loaded plugins: langpacks, refresh-packagekit Resolving Dependencies --> Running transaction check ---> Package pygame.x86_64 0:1.9.1-14.fc20 will be installed --> Processing Dependency: numpy for package: pygame-1.9.1-14.fc20.x86_64 --> Processing Dependency: libportmidi.so.0()(64bit) for package: pygame-1.9.1-14.fc20.x86_64 --> Processing Dependency: libSDL_ttf-2.0.so.0()(64bit) for package: pygame-1.9.1-14.fc20.x86_64 --> Processing Dependency: libSDL_mixer-1.2.so.0()(64bit) for package: pygame-1.9.1-14.fc20.x86_64 --> Processing Dependency: libSDL_image-1.2.so.0()(64bit) for package: pygame-1.9.1-14.fc20.x86_64 --> Running transaction check ---> Package SDL_image.x86_64 0:1.2.12-7.fc20 will be installed ---> Package SDL_mixer.x86_64 0:1.2.12-5.fc20 will be installed --> Processing Dependency: libmikmod for package: SDL_mixer-1.2.12-5.fc20.x86_64 ---> Package SDL_ttf.x86_64 0:2.0.11-4.fc20 will be installed ---> Package numpy.x86_64 1:1.8.2-2.fc20 will be installed --> Processing Dependency: python-nose for package: 1:numpy-1.8.2-2.fc20.x86_64 ---> Package portmidi.x86_64 0:217-9.fc20 will be installed --> Running transaction check ---> Package libmikmod.x86_64 0:3.3.6-3.fc20 will be installed ---> Package python-nose.noarch 0:1.3.0-1.fc20 will be installed --> Finished Dependency Resolution Dependencies Resolved ================================================================================ Package Arch Version Repository Size ================================================================================ Installing: pygame x86_64 1.9.1-14.fc20 fedora 2.1 M Installing for dependencies: SDL_image x86_64 1.2.12-7.fc20 fedora 41 k SDL_mixer x86_64 1.2.12-5.fc20 fedora 91 k SDL_ttf x86_64 2.0.11-4.fc20 fedora 22 k libmikmod x86_64 3.3.6-3.fc20 updates 142 k numpy x86_64 1:1.8.2-2.fc20 updates 3.0 M portmidi x86_64 217-9.fc20 fedora 26 k python-nose noarch 1.3.0-1.fc20 fedora 272 k Transaction Summary ================================================================================ Install 1 Package (+7 Dependent packages) Total download size: 5.7 M Installed size: 21 M Downloading packages: (1/8): SDL_image-1.2.12-7.fc20.x86_64.rpm | 41 kB 00:00 (2/8): SDL_mixer-1.2.12-5.fc20.x86_64.rpm | 91 kB 00:00 (3/8): portmidi-217-9.fc20.x86_64.rpm | 26 kB 00:00 (4/8): SDL_ttf-2.0.11-4.fc20.x86_64.rpm | 22 kB 00:00 (5/8): libmikmod-3.3.6-3.fc20.x86_64.rpm | 142 kB 00:00 (6/8): numpy-1.8.2-2.fc20.x86_64.rpm | 3.0 MB 00:02 (7/8): pygame-1.9.1-14.fc20.x86_64.rpm | 2.1 MB 00:01 (8/8): python-nose-1.3.0-1.fc20.noarch.rpm | 272 kB 00:00 -------------------------------------------------------------------------------- Total 1.7 MB/s | 5.7 MB 00:03 Running transaction check Running transaction test Transaction test succeeded Running transaction (shutdown inhibited) Installing : SDL_ttf-2.0.11-4.fc20.x86_64 1/8 Installing : SDL_image-1.2.12-7.fc20.x86_64 2/8 Installing : portmidi-217-9.fc20.x86_64 3/8 Installing : libmikmod-3.3.6-3.fc20.x86_64 4/8 Installing : SDL_mixer-1.2.12-5.fc20.x86_64 5/8 Installing : python-nose-1.3.0-1.fc20.noarch 6/8 Installing : 1:numpy-1.8.2-2.fc20.x86_64 7/8 Installing : pygame-1.9.1-14.fc20.x86_64 8/8 Verifying : pygame-1.9.1-14.fc20.x86_64 1/8 Verifying : SDL_mixer-1.2.12-5.fc20.x86_64 2/8 Verifying : python-nose-1.3.0-1.fc20.noarch 3/8 Verifying : libmikmod-3.3.6-3.fc20.x86_64 4/8 Verifying : 1:numpy-1.8.2-2.fc20.x86_64 5/8 Verifying : portmidi-217-9.fc20.x86_64 6/8 Verifying : SDL_image-1.2.12-7.fc20.x86_64 7/8 Verifying : SDL_ttf-2.0.11-4.fc20.x86_64 8/8 Installed: pygame.x86_64 0:1.9.1-14.fc20 Dependency Installed: SDL_image.x86_64 0:1.2.12-7.fc20 SDL_mixer.x86_64 0:1.2.12-5.fc20 SDL_ttf.x86_64 0:2.0.11-4.fc20 libmikmod.x86_64 0:3.3.6-3.fc20 numpy.x86_64 1:1.8.2-2.fc20 portmidi.x86_64 0:217-9.fc20 python-nose.noarch 0:1.3.0-1.fc20 Complete! |
I hope this helps folks install the software.
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