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Sourcery Sourcery

Merge Assignment and Augmented Assignment

Documentation Index

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Sourcery refactoring id: merge-assign-and-aug-assign

Section titled “Sourcery refactoring id: merge-assign-and-aug-assign”

Description:

Section titled “Description:”

Replaces an assignment and an augmented assignment with a single assignment.

Before:

Section titled “Before:”
other_value = 33
number = 42
number += other_value

After:

Section titled “After:”
other_value = 33
number = 42 + other_value

Explanation:

Section titled “Explanation:”

When we mutate a variable multiple times without reading or writing its value in between, it’s more readable and more efficient to change its value only once. This way, it’s clearer which values this variable can have at various points.

This refactoring works with all 4 augmented assignment operators:

  • +=
  • -=
  • *=
  • /=