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What is string interning in Python?

Q: What is string interning in Python?

**Interning** stores a single shared copy of a string in an internal pool, so equal strings can be the **same object**. CPython automatically interns many strings that look like **identifiers** (compile-time literals made of letters/digits/underscores), because they're used heavily as **dict keys** (variable names, attributes): intern pool 'hello' a='hello' <rect class='d-box

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strinterning

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PYAuto-interned literals vs a runtime-built string

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