dictionary python 3 code example

Example 1: dictionaries in python 3

clear() - Removes all the elements from the dictionary
copy() - Returns a copy of the dictionary
fromkeys() - Returns a dictionary with the specified keys and value
get() - Returns the value of the specified key
items() - Returns a list containing a tuple for each key value pair
keys() - Returns a list containing the dictionary's keys
pop() - Removes the element with the specified key
popitem() - Removes the last inserted key-value pair
setdefault() - Returns the value of the specified key. If the key does not exist: insert the key, with the specified value
update() - Updates the dictionary with the specified key-value pairs
values() - Returns a list of all the values in the dictionary

Example 2: how to use dictionaries in python 3

dict = {'Name': 'Zara', 'Age': 7, 'Class': 'First'}
print ("dict['Name']: ", dict['Name'])
print ("dict['Age']: ", dict['Age'])

Example 3: how to create a dictionary in python

thisdict = {
  "key1" : "value1"
  "key2" : "value2"
  "key3" : "value3"
  "key4" : "value4"
}

Example 4: list comprehension python 3

number_list = [x for x in range(10) if x % 2 == 0]
print(number_list)

Example 5: tuple in python

#a tuple is basically the same thing as a
#list, except that it can not be modified.
tup = ('a','b','c')

Example 6: python dict access

my_dict = {'name':'Jack', 'age': 26}
my_dict['name']