How to input a list of dictionaries from the user in python? [duplicate]

Question

I've tried below code but it overwrites and makes duplicate of the last dictionary inputted.

name_lists=[]
d = {}
flag = ""
while(flag != "N"):
    d["name"] = input("Enter a name: ")
    d["surname"] = input("Enter a surname: ")
    d["patronmic"] = input("Enter a patronmic: ")
    d["id_number"] = input("Enter a worker's id number: ")
    name_lists.append(d)
    flag = input("Continue inputting data Y/N: ")
print(name_lists)

there is only one dictionary here. That is the problem. You keep appending the exact same dict multiple times to the list, name_lists.append(d) — juanpa.arrivillaga
– juanpa.arrivillaga, Commented Oct 1, 2021 at 9:09
@deceze (offtopic) how do you reference several duplicates when closing? Is this because someone already flagged the question? — mozway
– mozway, Commented Oct 1, 2021 at 9:10
@mozway How? With the edit button next to the duplicates. Not sure at what rep level you can use that. — Why? Because I'm closing as the first best duplicate I find, and sometimes find better ones afterwards, or multiple dupes may be necessary to answer a question in full. — deceze
– deceze ♦, Commented Oct 1, 2021 at 9:13
``` name_lists=[] d = {} flag = "" while(flag != "N"): d["name"] = input("Enter a name: ") d["surname"] = input("Enter a surname: ") d["patronmic"] = input("Enter a patronmic: ") d["id_number"] = input("Enter a worker's id number: ") name_lists.append(d) d = {} flag = input("Continue inputting data Y/N: ") print(name_lists) ``` Added a new statement to reinitialise d to an empty dict. — codefire
– codefire, Commented Oct 1, 2021 at 9:14

mozway · Accepted Answer · 2021-10-01 09:07:12Z

0

You need to move your d instantiation inside the loop, or you will overwrite the data at each step:

name_lists=[]
flag = ""
while(flag != "N"):
    d = {}
    d["name"] = input("Enter a name: ")
    d["surname"] = input("Enter a surname: ")
    d["patronmic"] = input("Enter a patronmic: ")
    d["id_number"] = input("Enter a worker's id number: ")
    name_lists.append(d)
    flag = input("Continue inputting data Y/N: ")
print(name_lists)

example output:

[{'name': 'a', ...}, {'name': 'b', ...}]

answered Oct 1, 2021 at 9:07

mozway

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