repr() — Expert Examples
Returns a developer-friendly string representation of an object
repr() performance and internals
Performance characteristics and CPython implementation details.
python
# repr() internals import dis def using_repr(): return repr(42) # Bytecode analysis dis.dis(using_repr) # Check if it's truly built-in import builtins print(f"\nrepr is builtin: {hasattr(builtins, 'repr')}") print(f"Type: {type(builtins.repr)}")
Understanding the internal implementation helps optimize hot paths in performance-critical code.
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