Python variables, strings, and integers

Introduction to Python for Developers

Jasmin Ludolf

Senior Data Science Content Developer

Understanding variables

• Store and reuse information
• Easy to read and update
• Avoid typing things over and over

¹ Image by reginafosterphotos

Data types

• The kind of value
  • Number
  • Text
  • True/False
• Python assigns data types automatically

String data types

• Strings: text values
• Can contain letters, numbers, and punctuation

$$

"Hello, world!"

"20-minute pasta recipe"

String data types

• Strings: text values
• Can contain letters, numbers, and punctuation
• Use single or double quotes
• Double quotes for words with apostrophes

"Chef's secret seasoning"

'Chef's secret seasoning'

String variable

$$

ingredient_name

$$

• Use lowercase and underscores for spaces

String variable

$$

ingredient_name =

String variable

$$

ingredient_name = "Tomatoes"

Integer data types and variables

• Integer: whole numbers
• No quotation marks are needed

$$

ingredient_quantity = 2

Printing variables

print(ingredient_name)

Tomatoes

print(ingredient_quantity)

2

Adjusting variables

print(ingredient_quantity)

2

$$

ingredient_quantity = 1

print(ingredient_quantity)

1

Let's practice!

Introduction to Python for Developers