Using Python to implement bank transfer functions

Source: Internet
Author: User

#coding:utf-8import mysqldb       #调用MySQL数据库模块conn =mysqldb.connect (  Host= ' ... ',     #输入数据库的IP地址  port=3306,      # Enter the database using port  user= ' ... ',      #输入数据库用户账号  passwd= ' ... ',      #输入数据库用户密码  db= ' ... ',      #输入数据库名称  charset= ' UTF8 '        #输入数据库编码  ) #转账函数def  transfer (s_id,d_id,num):  conn.autocommit (False)  a=id_avi (s_ ID)       #调用账号确认函数  b=id_avi (d_id)  c=money_avi (s_id,num)    # Call Balance Confirmation function  if a and b and c:  money_reduce (s_id,num)    #调用减钱函数   money_add (d_id,num)     #调用加钱函数   conn.commit ()   print u ' transfer success !'  else:  print u ' Transfer failed! '   conn.rollback () #存钱函数def  add_in (id,num):  a=id_avi (ID)  if&nbsP;a:  money_add (id,num)     #调用加钱函数   conn.commit ()  else:   Print u ' account%s does not exist, please check! ' %id  conn.rollback () #取钱函数def  reduce_out (id,num):  a=id_avi (ID)  b=money_avi (id,num)  if a and b:  money_reduce (id,num)    #调用减钱函数   conn.commit ()  else:  print u ' failed to withdraw money! Please check! '   conn.rollback () #账号确认函数def  id_avi (ID):  curr=conn.cursor ()  sql= ' select *  from money where uid=%s '%id curr.execute (SQL)  row=curr.rowcount if row==1:   print u ' account%s confirmed success! ' %id  return true else:  print u ' account%s confirmation failed! ' %id  return false curr.close () #账户余额确认函数def  money_avi (id,num):  curr=conn.cursor ()  sql= ' select money from money where uid=%s '%id curr.execute (SQL)  n= Curr.fetchone ()  NN=N[0] IF NN>=NUM: &NBSp;print u ' account%s balance is enough! ' %id  return true else:  print u ' account%s balance is low! ' %id   return false curr.close () #减钱函数def  money_reduce (id,num):  curr= Conn.cursor ()  sql= ' update money set money=money-%s where uid=%s '% (num,id)   Curr.execute (SQL)  print u ' turn out confirmation! '  curr.close () #加钱函数def  money_add (id,num):  curr=conn.cursor ()  sql= ' update money  set money=money+%s where uid=%s '% (num,id)  curr.execute (SQL)  print u ' transfer to confirm! '   curr.close () #实例: Reduce_out (1,2000) transfer (2,1,1999)

Using Python to implement bank transfer functions

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