Writing to a .json file - json

Question

I am currently trying to write 2 pieces of user inputted code to a .json file without clearing the existing data. I believe it is a problem with the logins.append as it says there is no such thing. What would i have to use?
I have been searching around trying to find different suffixes to the logins.
def i():
path_to_json = "./logins.json"
with open("logins.json", "r") as content:
logins = json.load(content)
with open('logins.json', 'a') as outfile:
username = str(input('New Username: '))
password = str(input('New Password: '))
logins.append({username:password})
I am getting the error:
Traceback (most recent call last):
File "<pyshell#5>", line 1, in <module>
i()
File "N:\NEA Computing\NEA code.py", line 188, in i
logins.append({username: password})
AttributeError: 'dict' object has no attribute 'append'
I am expecting it to add data to the .json file without deleting the other data however i am getting an error and nothing is being written to the .json file.

Answer 1

Try to open the file with 'w' option
def i():
path_to_json = "./logins.json"
with open("logins.json", "w") as content:
logins = json.load(content)
with open('logins.json', 'a') as outfile:
username = str(input('New Username: '))
password = str(input('New Password: '))
logins.append({username:password})

Answer 2

Maybe this is a misunderstanding of the question, but what is happening, as far as I can see, is that you use json.load, which seems to load an object literal like {key1: value1, key2: value2,...} and not an array literal like [value1, value2, ...]. Python converts the first one into a python dict, and a dictionary has no append function, only an array / a list has. You get your error and execution halts. When you have the content of logins.json as object {...}, it doesn't work for me but as array/list [...] it works