Flash cards
Review the key moves
1/4
Core idea
What is the main idea behind Python - Nested Dictionaries?
Lesson checks
Practice each idea before moving on
Short Mimo-style checks built from this lesson's code, terms, and sequence.
1Quick choice
Which statement best captures the main point of this lesson?
2Fill blank
Complete the missing token from the example code.
___ = {3Order
Put the learning moves in the order that makes the concept easiest to apply.
Loop Through Nested Dictionaries
Access Items in Nested Dictionaries
Nested Dictionaries
Nested Dictionaries
A dictionary can contain dictionaries, this is called nested dictionaries.
Example
myfamily = {
"child1" : {
"name" : "Emil",
"year" : 2004
},
"child2" : {
"name" : "Tobias",
"year" : 2007
},
"child3" : {
"name" : "Linus",
"year" : 2011
}
}Or, if you want to add three dictionaries into a new dictionary:
Example
child1 = {
"name" : "Emil",
"year" : 2004
}
child2 = {
"name" : "Tobias",
"year" : 2007
}
child3 = {
"name" : "Linus",
"year" : 2011
}
myfamily = {
"child1" : child1,
"child2" : child2,
"child3" : child3
}Access Items in Nested Dictionaries
To access items from a nested dictionary, you use the name of the dictionaries, starting with the outer dictionary:
Example
print(myfamily["child2"]["name"])Loop Through Nested Dictionaries
You can loop through a dictionary by using the items() method like this:
Example
for x, obj in myfamily.items():
print(x)
for y in obj:
print(y + ':', obj[y])