Python 3: How to recover key names after a Sorted

Question

Hello someone can help me recover values from that dictionary list?

sellers = [
            {"name": "Joaquina", "store": 2, "value": 1200.00},
            {"name": "Pedro", "store": 2, "value": 120.00},
            {"name": "Maria", "store": 1, "value": 450.00},
            {"name": "Fernanda", "store": 1, "value": 4000.00},
            {"name": "Patricia", "store": 1, "value": 100.00},

        ]

When I do this operation on Pythontutor

def sales_goals(self, sellers):
        abaixo_da_meta = sorted([vendedor["value"] for vendedor in sellers if vendedor["value"] < 500])
        vendedores_falta_meta = [vendedor["name"] for vendedor in sellers if vendedor["value"] == abaixo_da_meta]
        return vendedores_falta_meta

The seller variable_falta_meta does not retrieve the names of the variable lower_da_meta but an empty list, thanks!

Answer 1

You don’t need to create a list with just the values of value to sort them in ascending order and then get them again. You can always filter and sort keeping your original dictionary and sort them using the parameter key.

from operator import itemgetter

sellers = [
  {"name": "Joaquina", "store": 2, "value": 1200.00},
  {"name": "Pedro", "store": 2, "value": 120.00},
  {"name": "Maria", "store": 1, "value": 450.00},
  {"name": "Fernanda", "store": 1, "value": 4000.00},
  {"name": "Patricia", "store": 1, "value": 100.00}
]

abaixo_da_meta = filter(lambda seller: seller['value'] < 500, sellers)
vendedores_falta_meta = sorted(abaixo_da_meta, key=itemgetter('value'))

print(vendedores_falta_meta)

The exit will be:

[
  {'name': 'Patricia', 'store': 1, 'value': 100.0}, 
  {'name': 'Pedro', 'store': 2, 'value': 120.0}, 
  {'name': 'Maria', 'store': 1, 'value': 450.0}
]

Which are the below-target sellers ranked in ascending order by the value of value.

Answer 2

abaixo_da_meta is a list, you have to go through it to be able to compare the values correctly.

sellers = [
            {"name": "Joaquina", "store": 2, "value": 1200.00},
            {"name": "Pedro", "store": 2, "value": 120.00},
            {"name": "Maria", "store": 1, "value": 450.00},
            {"name": "Fernanda", "store": 1, "value": 4000.00},
            {"name": "Patricia", "store": 1, "value": 100.00},

        ]

def sales_goals(sellers):
    abaixo_da_meta = sorted([vendedor["value"] for vendedor in sellers if vendedor["value"] < 500])
    vendedores_falta_meta = []
    for m in abaixo_da_meta:
        for vendedor in sellers:
            if(m == vendedor["value"]):
                vendedores_falta_meta.append(vendedor["name"])

    return vendedores_falta_meta