how to append key and values in dictionary from user in pyhton code example

Example 1: python dictionary add key-value pair

dict = {'key1':'value_one', 'key2':'value_two'}  
dict['key3'] = 'value_three'

Example 2: Python dictionary append

# to add key-value pairs to a dictionary:

d1 = {
	"1" : 1,
	"2" : 2,
  	"3" : 3
} # Define the dictionary

d1["4"] = 4 # Add key-value pair "4" is key and 4 is value

print(d1) # will return updated dictionary