Input/Output

The keyword input( ) is used to get data from the user.

input_output.py

# input pet_name with 'Enter pet name:'
pet_name = input('Enter pet name:')

# input age with 'Enter pet age:'
pet_age = input('Enter pet age:')

# print 'My pet {pet_name} is {pet_age}'
print('My pet', pet_name,  'is', pet_age)

Output:

Enter pet name:whiskers
Enter pet age:2
My pet whiskers is 2

converting_strings_to_integer.py

# input age with 'Enter pet age:'
pet_age = input('Enter pet age:')

# All input is a string, so how do you convert it to a number?
# hint: use int()
number = int(pet_age)

# once it is a number, you can do standard math
number = number + 5

print("In five years your pet's age will be", number)

Output:

Enter pet age:3
In five years your pet's age will be 8

Links

• Beginner's Guide

Exercises (5 mins)

1. Create a program that uses input and print as follow.

   # 1. input name with 'Enter name:'
   
   # 2. input age with 'Enter age:'
   
   # 3. print 'My age is {age}'
   
   # 4. convert age which is a string into variable called {number}
   # hint: use int()
   
   # 5. Add 1 to number
   
   # 6. print 'My name is {name} and my age next year is {number}'