how to add key and value in dictionary python? - python-3.x

Question

I am trying to add some value and key in python dictionary using following script
print('phone book contacts')
contacts = input('how many contacts to add: ')
i = 0
for i in range(int(contacts)):
phone_book = {}
a = input('name: ')
b = input('number: ')
phone_book[a] = b
print(phone_book)
when i input 2 key & value like these:
adam : 08123
daniel : 0877
I expect the output will be like these:
{'adam':'08123', 'daniel':'0877'}
instead I get the following output:
{'daniel': '1234'}
any ideas how to show dictionary key & value similar with my expected output?

Answer 1

You can try something like this:
class my_dictionary(dict):
# __init__ function
def __init__(self):
self = dict()
# Function to add key:value
def add(self, key, value):
self[key] = value
# Main Function
dict_obj = my_dictionary()
# Taking input key = 1, value = test
dict_obj.key = input("Enter the key: ")
dict_obj.value = input("Enter the value: ")
dict_obj.add(dict_obj.key, dict_obj.value)
dict_obj.add(2, 'test2')
print(dict_obj)

Answer 2

Use update() method of dictionary class in python.
So if applied to your code
It would be
print('phone book contacts')
contacts = input('how many contacts to add: ')
i = 0
phone_book = {}
for i in range(int(contacts)):
a = input('name: ')
b = int(input('number: '))
phone_book.update({a : b})
print(phone_book)
Since number is integer you have to use curly braces.
And yes move phone_book = {} above the loop because it will be set to empty every time it loops.