iter() — Expert Playground

Returns an iterator object from an iterable

Python Playground

# iter() internals
import dis

def using_iter():
    pass

# Bytecode analysis
dis.dis(using_iter)

# Check if it's truly built-in
import builtins
print(f"\niter is builtin: {hasattr(builtins, 'iter')}")
print(f"Type: {type(builtins.iter)}")

Output

Click "Run" to execute your code

Understanding the internal implementation helps optimize hot paths in performance-critical code.

Challenge

Try modifying the code above to explore different behaviors. Can you extend the example to handle a new use case?

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