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python3.7連線mysql

import pymysql.cursors
import numpy as np
import pandas as pd

# 連線資料庫
connect = pymysql.Connect(
    host='localhost',
    port=3306,
    user='root',
    passwd='123456',
    db='python',
    charset='utf8'
)

# 獲取遊標
cursor = connect.cursor()
#列印所有資料
cursor.execute("select * from trade")
a=list(cursor.fetchall())
b=pd.DataFrame(a,index=["one","two","three","four"],columns=["序號","姓名","聯絡方式","薪資","其他","備註"])
c=b.iloc[:,0:4]
print(c.sort())
cursor.close()
connect.close()