python - 如何将字典保存为 JSON 文件？

Question

我有一些发票项目:

lista_items = {}        
lineNumber = 0
for line in self.invoice_line_ids:
    lineNumber = lineNumber + 1            
    print lineNumber
    lista_items["numeroLinea"] = [lineNumber]
    lista_items["cantidad"] = [line.quantity]
    lista_items["costo_total"] = [line.price_subtotal]
    lista_items["precioUnitario"] = [line.price_unit]
    lista_items["descripcion"] = [line.name]            
    # for line_tax in line.invoice_line_tax_ids:                
    #     print line_tax.amount            
    #     print line_tax.id 
    #     # print line.invoice_line_tax_ids               
return lista_items

我需要将项目保存在字典中，然后将其保存为 JSON。

我该怎么做？

Answer 1

您可以使用 json.dump() 将字典保存到文件中。例如:

# note that output.json must already exist at this point
with open('output.json', 'w+') as f:
    # this would place the entire output on one line
    # use json.dump(lista_items, f, indent=4) to "pretty-print" with four spaces per indent
    json.dump(lista_items, f)