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I have the following code:
# Lista dos produtos
produtos = {'1':('Dipirona 500mg 10 cp', 2.99),
'2':('Paracetamol 500mg 10 cp', 4.7),
'3':('Ibuprofeno 600 mg 4 cp ', 5.98),
'4':('Dorflex 10 cp', 10.99),
'5':('Neosoro', 3.49),
'6':('Torsilax 4 cp', 5.99)}
total_compra = valor_item = troco = 0 # variável para total da compra, valor unitário do item e para o troco
produtos_comprados = [] # lista que receberá os itens 'escaneados'/digitados
qtd_produtos = 0 # variável que recebe a quantidade de produtos
while True:
codigo = str(input('\nDigite o código de um produto: '))
if len(codigo) > 0:
if codigo in produtos.keys():
print(f'Produto.: {produtos.get(codigo)[0]}')
descricao_produto = produtos.get(codigo)[0]
print(f'Valor...: R$ {produtos.get(codigo)[1]:.2f}')
valor_pro = produtos.get(codigo)[1]
qtd_produtos += 1
total_compra += valor_pro
produtos_comprados.append([codigo, valor_pro, descricao_produto])
else:
print('Código de produto inválido')
else:
break
It’s working normally, only now I want this same code to query the MYSQL database (instead of consulting the dictionary). I have already created the table and database in MYSQL, I have installed the MYSQL connector via Pip, I have already made the import and connection to the database. I just really wanted to know how to write the syntax of how it looks in the bank and returns the product name and price. Then, I need him to add the searched items to a local list, because the purchased items will be shown on the invoice on the screen.
In the table I have the same fields: code (integer) , product(varchar) and price(float). When entering the code, I need it to return the product and the price on the screen. Thank you for your attention and help.
Answered in the post
– Paulo Marques
Hi Paulo Marques, all right? Didn’t understand this formatted string sql = f"select product, preco Where code = '{code}';" . How will it select within a format string? it will return the literal text not? Either way, you are giving the following error: mysql.connector.errors.Programmingerror: 1054 (42S22): Unknown column 'product' in 'field list'
– JonathasFrs
Code in git (no database connection) if you want to check https://gist.github.com/jonathasfrsantos/ae00deb04e53f1794017a128707bd728
– JonathasFrs
Oops, I had forgotten the from table in the query. I updated the post. The query is executed on the line
cursor.execute(sql)
you can put the string right there.– Paulo Marques
It worked buddy! Now I need it to include the searched items in a list called "purchased products". I have no idea how to create variables where it gets "product name" and "price" and then take these values and insert them into a list.
– JonathasFrs
Better open another post with this question.
– Paulo Marques