Python通过EXCEL生成SQL语句

import pandas as pd


class SqlTest(object):

    def __init__(self):
        self.a = f"with a1 as ( "
        self.b = f")select count(*) from a1"
        self.df = pd.read_csv(r'D:\sql.csv', encoding='gb18030')
        self.text = " "

    def sqltest(self):
        df = self.df
        print(self.a)
        for index, row in df.iterrows():
            if index != df.index[-1]:
                text = f"{self.text}select '{row[0]}.{row[1]}' as table_name,count(*) as count from '{row[0]}.{row[1]}' where dt ='{row[2]}'union on"
                print(text)
            else:
                text = f"{self.text}select '{row[0]}.{row[1]}' as table_name,count(*) as count from '{row[0]}.{row[1]}' where dt ='{row[2]}'  "
        print(text)

        print(self.b)


if __name__ == '__main__':
    t = SqlTest()
    t.sqltest()