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Quick Recap

Explore Python string operations and dictionary optimizations to understand when to use +=, join(), or format strings. Learn about dictionary key performance and unusual Python expressions to improve your coding skills. This lesson helps you avoid common pitfalls and write efficient, idiomatic Python.

We'll cover the following...
  • As mentioned in one of the previous chapters, classes can implement the += and + operators differently. For concatenating more than two strings, += is faster.
  • To make giant strings iteratively, it is better to
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