Web Reference: Oct 13, 2025 · Strings in Python are "immutable" i.e. they cannot be changed after they are created. Strings are immutable by design to keep them safe, consistent, and efficient. Mar 1, 2015 · And lastly, if strings weren't immutable, you couldn't reliably use them as keys in a dict, since their hash value might suddenly change. As for programming with immutable strings, just get used to treating them the same way you treat numbers: as values, not as objects. Strings in Python are immutable, meaning you can’t change their content after creation. To check if an object is mutable, you can try altering its contents. If you succeed without an error, it’s mutable.
YouTube Excerpt: It might seem like you can change a
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