pip install pymysql

#coding utf-8import pymysqltry:    conn = pymysql.connect(host=‘localhost‘,user="root",password=‘123456‘,database=‘datarepair‘,port=3306,charset=‘utf8‘)    cursor = conn.cursor()    #cursor.execute("select rowId,Name from ruletab where ruletype=%s",(10))    cursor.executemany("select rowId,Name from ruletab where ruletype=%s",[10,20]) #一般用于批量增删改中。    print(cursor.rowcount,cursor.rownumber)    for x in cursor.fetchall():        print("rowId:{0[0]} Name:{0[1]} RowNumber:{1}".format(x,cursor.rownumber))    print(‘-‘ * 50)    for x in cursor.fetchmany(2):        print("rowId:{0[0]} Name:{0[1]} RowNumber:{1}".format(x,cursor.rowcount))    print(‘-‘ * 50)    cursor.scroll(0,‘absolute‘) #将游标调回0位置处。    for x in cursor.fetchmany(2):  #取2条记录。        print("rowId:{0[0]} Name:{0[1]} RowNumber:{1}".format(x,cursor.rownumber))    print(cursor.rowcount,cursor.rownumber)    cursor.close()finally:    if ‘conn‘ in dir() and callable(conn) and conn.open:        conn.close()        print("closed successfully.")