• Open a terminal
• Create your file by writing the following command

vim ex1.py

• Enter insertion mode by pressing Insert
• Write the line below

print("Hello world !")

• Then press Esc key
• Save the file
• Execute

python3 ex1.py

• Open a terminal
• Create your file by writing the following command

vim ex2.py

• Enter insertion mode by pressing Insert
• Write the line below

prenom = input('Salut! Quel est ton prénom ?\n')
nom = input('Et ton nom alors ?\n')
 
print("Salut " + prenom + " " + nom)

• Then press Esc key
• Save the file
• Execute

python3 ex2.py

• Open a terminal
• Create your file by writing the following command

vim ex3.py

• Enter insertion mode by pressing Insert
• Write the line below

nombre = input('Salut!\nEntre un nombre: ')
 
for i in range(int(nombre)):
    print(i+1, end=' ')

• Then press Esc key
• Save the file
• Execute

python3 ex3.py

• Open a terminal
• Create your file by writing the following command

vim ex4.py

• Enter insertion mode by pressing Insert
• Write the line below

nombre1 = input('Salut!\nEntre un premier nombre\n')
nombre2 = input('Et un deuxième nombre: ')
 
for i in range(int(nombre1), int(nombre2) - int(1), -1):
    print(i, end='\n')

• Then press Esc key
• Save the file
• Execute

python3 ex4.py