PEP pattern matching is useless

evil.py

def match(value, clauses):
    for m in clauses:
        try:
            exec(f'{m} = {value}')
            return clauses[m](locals())
        except (TypeError, ValueError):
            continue
    raise ValueError('non exhaustive patterns')

def main():
    value = match((5, 1, 3), {
        '(x, y)': lambda env: env['x'],
        '(x, y, z)': lambda env: env['z'],
    })
    print(value)

if __name__ == '__main__':
    main()