map() function getting input

Question

I'be trying to get an special input from the user and then save it in something like a dictionary. The input I have in mind is something like:

>>> id 1230

and I want it to be save in the form of:

{"id":1230}

or

[(id,1230)]

my problem is that there are actually two variables,one is a string and another is an integer,so somehow I have the get a line from the user,then the first and second parts should be separated and saved in one of the forms I mentioned. I know it has to do with the map() function and maybe a lambda expression is also used.once I used such a code to get two integers:

x,y = map(int,input().split())

but I really don't know how to do it with a string and integer. Thank you very much

Answer 1

The question about whether you would like to store the data as a dict or a list of tuples depends on whether you want the user to overwrite existing values or not. If you store the values in a dict, the input of

id 1230
hi 16
id 99

will produce a dictionary like {"id": 99, "hi":16} because the second input id overwrites the first. A list of tuples approach would produce [("id", 1230), ("hi", 16), ("id", 90)].

How to parse the values has already been suggested by other people, but for completion I will add it to my answer as well.

Dict approach

d = dict()
var = input('Enter input: ')
key, value = var.split()
d[key] = int(value)

List approach

L = list()
var = input('Enter input: ')
key, value = var.split()
L.append((key, int(value)))

Answer 2

You do not need map here. You can use str.split to split by whitespace and then create a dictionary explicitly:

var = input('Enter input: ')  # 'id 1230'
key, value = var.split()
d = {key: int(value)}         # {'id': 1230}

You can add some checks to ensure the format is input correctly before proceeding with creating the dictionary:

while True:
    try:
        var = input('Enter input: ')  # 'id 1230'
        key, value = var.split()
        d = {key: int(value)}         # {'id': 1230}
        break
    except ValueError:
        print('Incorrect format supplied, type "id 1230" expected. Please try again.')