python dict add key value pair 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 add key-value pair

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

Example 3: python dictoinary add value

student_scores = {'Simon': 45  }
print(student_scores)
# {'Simon': 45}
student_scores['Sara'] = 63
print(student_scores)
# {'Simon': 45, 'Sara': 63}

Example 4: add values to dictionary key python

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