How to read the contents of a database table in Python?

One common method to read the contents of a database table in Python is by using database connection libraries and query libraries. One example is using the MySQL connector library (mysql-connector-python) and the pandas library to read the contents of a MySQL database table.

First, you need to install the necessary libraries. Execute the following command in the command line:

pip install mysql-connector-python
pip install pandas

Next, use the following code to retrieve the contents of the database table:

import mysql.connector
import pandas as pd

# 创建数据库连接
cnx = mysql.connector.connect(user='your_username', password='your_password',
                              host='your_host',
                              database='your_database')

# 创建查询语句
query = "SELECT * FROM your_table"

# 执行查询并获取结果
df = pd.read_sql(query, con=cnx)

# 关闭数据库连接
cnx.close()

# 输出查询结果
print(df)

The following content needs to be replaced in the code above.

1. your_username: Your database username
2. Your database password: the password for your database.
3. your_host: the main server of your database.
4. The name of the database you want to connect to is: your_database.
5. Your_table: the name of the database table that you want to read.

In this way, Python can be used to read the contents of a database table and store them in a DataFrame object, allowing for further data processing and analysis.