Improve your Python skills with Exercise 8: For Loop

Let’s check out some exercises that will help you understand Python’s For Loops better.

Content

-Exercise 1
-Exercise 2
-Exercise 3
-Exercise 4
-Exercise 5
-Exercise 6
-Exercise 7
-Exercise 8
-Exercise 9

MORE EXERCISES

Exercise 8-a

Write a for loop so that every item in the list is printed.

Hint 1

You can start a for loop and write a print statement inside it.

for i in …:
….

Solution

for i in lst:
    print(i)

Exercise 8-b

Write a for loop which print "Hello!, " plus each name in the list. i.e.: "Hello!, Sam"

Hint 1

You can add strings together with “+” sign.: “Hello!, ” + “Sam” = “Hello!, Sam”

Solution

for i in lst:
    print("Hello!, " + i)

Exercise 8-c

Write a for loop that iterates through a string and prints every letter.

Hint 1

When you iterate through a string it will go through the letters as strings have indexing too.

Solution

for i in str:
    print(i)

Exercise 8-d

Type a code inside the for loop so that counter variable named c is increased by one each time loop iterates. Can you guess how many times it will add 1?.

Hint 1

c = c+1

Solution

c = 0
for i in str:
    c = c+1
print(c)

Exercise 8-e

Using a for loop and .append() method append each item with a Dr. prefix to the lst.

Hint 1

“Dr. ” + i will create a string with “Dr. ” prefix and name.

Hint 2

.append() method can be used inside the for loop to append each element during the iteration.

Solution

for i in lst1:
    lst2.append("Dr. " + i)

Exercise 8-f

Write a for loop which appends the square of each number to the new list.

Hint 1

i**2 will give square of i if it’s a number.

Hint 2

.append() method can be used inside the for loop to append each element during the iteration.

Solution

for i in lst1:
    lst2.append(i**2)

Exercise 8-g

Write a for loop using an if statement, that appends each number to the new list if it's positive.

Hint 1

You can write an if statement inside the for loop.

Hint 2

if i >0 will do the trick.

Solution

for i in lst1:
    if i > 0:
        lst2.append(i)

Exercise 8-h

Using for loop and if statement, append the value minus 1000 for each key to the new list if the value is above 1000. i.e.: if the value is 1500, 500 should be added to the new list.

Hint 1

You can write an if statement inside the for loop.

Hint 2

If you iterate through a dictionary it will iterate through its keys. If i is a key in dict, dict[i] will give the value of key i.

Solution

for i in dict:
    if dict[i] > 1000:
        lst.append(dict[i]-1000)

Exercise 8-i

Write a for loop which appends the type of each element in the first list to the second list.

Hint 1

You can write an if statement inside the for loop.

Hint 2

If you iterate through a dictionary it will iterate through its keys. If i is a key in dict, dict[i] will give the value of key i.

Solution

for i in lst1:
    lst2.append(type(i))

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