PyMySQL
PyMySQL:
PyMySQL is a Python library that provides a client interface for connecting to and interacting with a MySQL database. It allows you to easily connect to a MySQL server, execute SQL queries, and retrieve results.
To use PyMySQL, you need to install it first. You can install it using pip, the Python package installer, by running the following command:
pip install pymysql
Once installed, you can import the pymysql module in your Python script to start using it:
import pymysql
To establish a connection to a MySQL server, you can use the connect() function provided by PyMySQL. It takes various parameters such as the host, user, password, database, and port. Here’s an example of connecting to a MySQL server:
import pymysql
# Connect to the database
connection = pymysql.connect(
host='localhost',
user='username',
password='password',
database='database_name',
port=3306
)
# Perform database operations
# Close the connection
connection.close()
Once connected, you can execute SQL queries using the execute() method of the connection object. Here’s an example of executing a SELECT query and fetching the results:
import pymysql
# Connect to the database
connection = pymysql.connect(host='localhost', user='username', password='password', database='database_name', port=3306)
# Create a cursor object
cursor = connection.cursor()
# Execute a SELECT query
sql = "SELECT * FROM table_name"
cursor.execute(sql)
# Fetch all the rows
rows = cursor.fetchall()
# Process the rows
for row in rows:
print(row)
# Close the cursor and the connection
cursor.close()
connection.close()
You can also execute other types of SQL queries like INSERT, UPDATE, DELETE, etc., using the execute() method. PyMySQL provides various other methods and functionalities to handle transactions, handle errors, and perform other database operations.
Remember to handle exceptions and errors appropriately when working with databases to ensure the integrity and security of your data.
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