Notice: This page requires JavaScript to function properly.
Please enable JavaScript in your browser settings or update your browser.
Oppiskele for loop (5/5) | Loops
Learn Python from Scratch
course content

Kurssisisältö

Learn Python from Scratch

Learn Python from Scratch

1. The basics
2. Arithmetic operations
3. Common data types
4. Conditional statements
5. Other data types
6. Loops
7. Functions

book
for loop (5/5)

We haven't already discussed how can we use for loop to iterate over dictionaries, as this data structure completely differs from others. If you try to iterate just over a dictionary, it will iterate over its keys. So, it's the same that iterating over dict.keys().

In the previous section we saved countries as a dictionary too. And this time it will be much understandable how to print information. Let's see

1234567891011
# data countries_dict = {'USA': (9629091, 331002651), 'Canada': (9984670, 37742154), 'Germany': (357114, 83783942)} countries_dict["Brazil"] = (8515767, 212559417) countries_dict["India"] = (3166391, 1380004385) # for loop for i in countries_dict.keys(): print("Country name:", i) print("Area:", countries_dict[i][0]) print("Population:", countries_dict[i][1]) print("---------")
copy

There key was country name and respective value - is a tuple with area and population. You see, that this for loop is much "friendlier" than the previous ones.

Tehtävä

Swipe to start coding

Using the same approach, print each person's name, age, and height from people_d dictionary.

Ratkaisu

Switch to desktopVaihda työpöytään todellista harjoitusta vartenJatka siitä, missä olet käyttämällä jotakin alla olevista vaihtoehdoista
Oliko kaikki selvää?

Miten voimme parantaa sitä?

Kiitos palautteestasi!

Osio 6. Luku 7
toggle bottom row

book
for loop (5/5)

We haven't already discussed how can we use for loop to iterate over dictionaries, as this data structure completely differs from others. If you try to iterate just over a dictionary, it will iterate over its keys. So, it's the same that iterating over dict.keys().

In the previous section we saved countries as a dictionary too. And this time it will be much understandable how to print information. Let's see

1234567891011
# data countries_dict = {'USA': (9629091, 331002651), 'Canada': (9984670, 37742154), 'Germany': (357114, 83783942)} countries_dict["Brazil"] = (8515767, 212559417) countries_dict["India"] = (3166391, 1380004385) # for loop for i in countries_dict.keys(): print("Country name:", i) print("Area:", countries_dict[i][0]) print("Population:", countries_dict[i][1]) print("---------")
copy

There key was country name and respective value - is a tuple with area and population. You see, that this for loop is much "friendlier" than the previous ones.

Tehtävä

Swipe to start coding

Using the same approach, print each person's name, age, and height from people_d dictionary.

Ratkaisu

Switch to desktopVaihda työpöytään todellista harjoitusta vartenJatka siitä, missä olet käyttämällä jotakin alla olevista vaihtoehdoista
Oliko kaikki selvää?

Miten voimme parantaa sitä?

Kiitos palautteestasi!

Osio 6. Luku 7
Switch to desktopVaihda työpöytään todellista harjoitusta vartenJatka siitä, missä olet käyttämällä jotakin alla olevista vaihtoehdoista
Pahoittelemme, että jotain meni pieleen. Mitä tapahtui?
some-alt