callable() — Expert Examples
Returns True if the object appears callable (has __call__)
callable() performance and internals
Performance characteristics and CPython implementation details.
python
# callable() internals import dis def using_callable(): pass # Bytecode analysis dis.dis(using_callable) # Check if it's truly built-in import builtins print(f"\ncallable is builtin: {hasattr(builtins, 'callable')}") print(f"Type: {type(builtins.callable)}")
Understanding the internal implementation helps optimize hot paths in performance-critical code.
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