_ — Expert Playground

Wildcard pattern in match/case; catches anything

Python Playground

# '_' internals
import dis
import ast

code = "x = 42"
tree = ast.parse(code)
print(ast.dump(tree, indent=2))

Output

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Understanding the bytecode and internals helps write more efficient code.

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