如何在python中导入数据工具？

import csv

with open('data.csv', 'r') as file:
    reader = csv.reader(file)
    for row in reader:
        print(row)

import pandas as pd

data = pd.read_excel('data.xlsx')
print(data)

import xlrd

workbook = xlrd.open_workbook('data.xlsx')
sheet = workbook.sheet_by_index(0)

for row in range(sheet.nrows):
    print(sheet.row_values(row))

import json

with open('data.json', 'r') as file:
    data = json.load(file)
    print(data)

import MySQLdb

# 连接数据库
conn = MySQLdb.connect(host='localhost', user='username', password='password', db='database')

# 创建游标对象
cursor = conn.cursor()

# 执行SQL查询
cursor.execute('SELECT * FROM table')

# 获取查询结果
results = cursor.fetchall()

# 打印结果
for row in results:
    print(row)

# 关闭游标和连接
cursor.close()
conn.close()