how to add a value to a key in a dictionary python code example

Example 1: add new keys to a dictionary python

d = {'key':'value'}
print(d)
# {'key': 'value'}
d['mynewkey'] = 'mynewvalue'
print(d)
# {'mynewkey': 'mynewvalue', 'key': 'value'}

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

Example 3: how to add an item to a dictionary in python

a_dictonary = {}
a_dictonary.update({"Key": "Value"})

Example 4: dictionary append value python

d = {1:2}
d.update({2: 4})
print(d) # {1: 2, 2: 4}

Example 5: python how to add a new key to a dictionary

# Basic syntax:
dictionary['new_key'] = value

# Example:
d = {'a': 1, 'b': 5} # Define dictionary
d['c'] = 37 # Add a new key to the dictionary
print(d)
--> {'a': 1, 'b': 5, 'c': 37}

Example 6: add values to dictionary key python

key = "somekey"
a.setdefault(key, [])
a[key].append(2)