Python实现数据表查找

from pymysql import *

class JD(object):
def init(self):
# 创建connection链接
self.conn = connect(host=‘127.0.0.1’,port=8080, usser=‘root’, password=‘smoy’, database=‘jianda’, charset=‘utf8’)
# 获得cursor对象
self.cursor = self.conn.cursor()

def __del__(self):
	# 关闭cursor对象， 当程序结束 Python解释器自动调用此方法
	self.cursor.close()
	self.conn.close()
			
def execute_sql(self, sql):
	self.cursor.execute(sql)
	fro temp in self.cursor.fetchall():
		print(temp)
		
def show_all_items(self):
	sql = "select * from goods;"
	self.execute_sql(sql)
	
def show_cates(self):
	sql = "select name from goods_brands;"
	self.execute_sql(sql)

def show_brands(self):
	sql = "select name from goods_brands;"
	self.execute_sql(sql)

def add_brands(self):
	item_name = input("输入商品分类的名称：")
	sql = """insert into goods_brands (name) values ("%s")""" % item_name
	self.cursor.execute(sql)
	sql.conn.commit()

def get_info_by_anme(self):
	find_name = input("请输入要查询的商品的名字")
	sql = "select * form goods where name=%s" % find_name
	self.cursor.execute(sql, [find_name])
	print(self.cursor.fetchall())
		
@staticmethod
def print_num():
	print("1：所有的商品")
	print("2：所有的商品分类")
	print("3：所有的商品品牌分类")
	print("4：添加一个商品分类")
	print("5:：根据名字查询一个商品")
	num = input("请输入功能对应的序号")
	return num
		
def run(self):
	while True:
		num = JD.print_num()
		if num == 1:
			# 查询所有商品
			self.show_all_items()
		elif num == "2":
			# 查询分类
			self.show_cates()
		elif num == "3":
			#  商品品牌分类	
			self.show_brands()
		elif num == "4":
			# 添加品牌分类
			slef.add_brands()	
		elif num == "5":
			# 根据名字查询商品
			self.get_info_by_name()
		else:
			print("输入有误，重新输入..")		

def main():
jd = JD()
jd.run()

if name == “main”:
main()