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AI Engineering

Variables and scalar types

Variables and common scalar types give names to values used in a program.

Guess first. It doesn't count.

What number does this code display?

batch_size = 4batch_size = 8print(batch_size)

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What you'll learn4 ideas
  • A variable is a name that refers to a value.
  • Assignment connects a name on the left of `=` to a value on the right.
  • Reassignment connects an existing name to a new value.
  • `print(name)` displays the value the name refers to when that line runs.
Chapter 1: Python values and expressions6 lessons · 22 min
  1. 1Variables and scalar types3 min
  2. 2Python scalar types4 min
  3. 3Arithmetic expressions3 min
  4. 4Strings and formatted text3 min
  5. 5Input and type conversion3 min
  6. 6Challenge: Python values and expressions6 min
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This lesson is part of the AI Engineering course.

Example plan3 lessons · 10 min

Variables and scalar typesPython values and expressions3 min
Python scalar typesPython values and expressions4 min
Arithmetic expressionsPython values and expressions3 min

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