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- f2= open('Товары.txt','a')
- f2.write('ручки 25\n')
- f2.write('фломастеры 350\n')
- f2.write('альбом 350\n')
- f2.close()
- with open('Товары.txt','r') as file:
- result={}
- for line in file:
- line=line.split()
- result[line[0]]=line[1]
- print(result)
- print("===")
- def find_expensive(dic):
- max_price=0
- expensives=[]
- for i in dic.items():
- if float(i[1])>max_price:
- max_price=float(i[1])
- for i in dic.items():
- if float(i[1])==max_price:
- expensives.append(i[0])
- return expensives
- s=find_expensive(result)
- print(s)
- print("===")
- def skidka(dic,exp):
- for i in exp:
- dic[i]=str(float(dic[i])*0.9)
- with open('Новые цены.txt', 'w') as file:
- for elem in dic.items():
- file.write(' '.join(elem)+'\n')
- result={}
- with open('Товары.txt') as file:
- for line in file:
- line=line.split()
- result[line[0]]=line[1]
- skidka(result, find_expensive(result))
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