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The Problem With Immutable Objects

Explore the challenges of working with immutable objects in Python, learning about their benefits and limitations, especially for complex data structures. Understand the concept of shallow immutability and why mutable data might be preferable when processing large data sets.

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The costs associated with immutable objects

Although immutable objects solve a lot of problems with accidental modification of data as it is passed around in a program, it comes at a cost:

  • You may need to jump through a few hoops if you need to process the data.
  • You may end up making several copies of the data.

In many cases, it is worth using immutable data wherever possible for the sake of robustness. The main exception is for processing very large data structures. In that case, ...