To
run a Python script that accesses a database on dcm.uhcl.edu
T.A. Yang
·
The following prerequisites must be met in
order to run exercises included in this tutorial:
a)
Check
out the instructions in Creating your own toyu database to learn how
to create your own toyu database using a SQL script file.
Note: Your account id is your last name
followed by the first letter of your first name. For example, John Doe’s
account name is doej.
The password
is Sce+your id + !! (e.g., Sce1234567!!, if the person’s id is
1234567.
b)
Make sure your computer has a Python package
installed. Check out the instructions given in To run a Python script on your computer.
c)
On your own computer, you will need to have a database connector installed
in order for your Python script to communicate with the MySQL databases on the
server.
There exist more than one type of database
connectors for Python to connect to a MySQL server. In this demonstration, we
use the Python MySQL connector.
|
Below are different methods that you may
use to get the MySQL connector installed on your own computer. §
Method 1: Use the pip application that comes with your Python package to install
the database connector.
§
Method 2: Download and install the MySQL Installer for Python (available
at https://dev.mysql.com/downloads/connector/python/)
in order to install the database connector. §
Method 3: Alternatively, the Python MySQL
connector (and other connectors as well) can be downloaded by installing the
MySQL installer. Check out the download link at https://dev.mysql.com/downloads/installer/
(MySQL Installer 8.0.33). |
To see if a given computer has the Python
MySQL connector successfully installed:
-
Open a Command Prompt window; enter the command python.
-
Enter import mysql following the python prompt. If no error message is
returned, the MySQL connection is properly installed.
|
·
Download this sample Python script, mysqlPython.py, make necessary modifications (i.e.,
user name, password, and database name), and save it as a Python script file.
·
Open a Command Prompt and enter the command python
mysqlPython.py to run the script. As shown below, the Python script
connects to the c433323su01yangt2 database on dcm.uhcl.edu, select the
tuples from the Student table, and then enters a while loop to print each of
the tuples. After that, the database connection is closed.
