How to count values for a key inside a dictionary-CodePudding

i´m new here and in python. I think my problem is very simple, but I can´t solve it. I have a form with a checkbox. I send 4 selected options, and the querydict recognizes them. But when I ask it to print the 4 values, it only brings me the last one.

This is my html:

I send the form and it goes to def dietPlan in views.py:

def dietPlan(request):
    # Obtengo los datos que vienen del formulario
    querydict=request.POST
    print((querydict))
    print((querydict['opcionesCena']))
    print(len(querydict['opcionesCena']))

But, the prints are:

<QueryDict: {'csrfmiddlewaretoken': ['qNAKsaNlPOO3UY7X76sNy1bEuidxd4WDvUlwJXD6BYxA1JTkyra0A86eYMHJfJ3B'], 'opcionesCena': ['AlimentoID352', 'AlimentoID356', 'AlimentoID360', 'AlimentoID364']}>
AlimentoID364
13

Only recognize AlimentoID364 (the last one of the 4) and it takes the number of characters in AlimentoID364.

I need to count how many values are for the key 'opcionesCena': if there are 4, or 5, or whatever.

Could you help me? Thanks in advance

CodePudding user response：

As the object is a QueryDict you should use:

querydict.getlist('opcionesCena')

to print the list object from the dict.

Source

CodePudding user response：

If you just need to know how many values are associated with each key then you could use something like this.

for key, value in querydict.items():
    #print value
    print(key, len([item for item in value if item]))