for loop (1/5)

Often we don't need to iterate until something happens - we want to iterate over some set of elements, or something like that.

To construct loop iterating over elements use for loop:


              12
            
for var in smth_iterable:
  do_smth

Common practice is using range() as an iterable object we will use in the loop.
range(n) function with 1 positive argument generates a numbers from 0 to n (exclusive, i.e. to n-1).
range(m,n) function generates number from m to n exclusive in case if both are positive and m < n.

For example, we can rewrite the example from section 5.1 using for loop (in that exercise we printed numbers from 1 to 9)


              123
            
# using for loop to print numbers from 1 to 9
for i in range(1,10):
  print(i)

Please note, that unlike while loop, variable i inside for loop shouldn't be defined before. It's like a dummy variable.

Compito

Swipe to start coding

Using for loop print all the numbers from 10 to 20 squared.

Soluzione

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Sezione 6. Capitolo 3

for loop (1/5)

Often we don't need to iterate until something happens - we want to iterate over some set of elements, or something like that.

To construct loop iterating over elements use for loop:


              12
            
for var in smth_iterable:
  do_smth

For example, we can rewrite the example from section 5.1 using for loop (in that exercise we printed numbers from 1 to 9)


              123
            
# using for loop to print numbers from 1 to 9
for i in range(1,10):
  print(i)

Please note, that unlike while loop, variable i inside for loop shouldn't be defined before. It's like a dummy variable.

Compito

Swipe to start coding

Using for loop print all the numbers from 10 to 20 squared.

Soluzione

Cambia al desktop per esercitarti nel mondo realeContinua da dove ti trovi utilizzando una delle opzioni seguenti

Tutto è chiaro?

Grazie per i tuoi commenti!

Sezione 6. Capitolo 3

Cambia al desktop per esercitarti nel mondo realeContinua da dove ti trovi utilizzando una delle opzioni seguenti