dis

dis模块用于反编译Python字节码，查看Python代码的执行过程。

import dis
def m():
    x = [123,456]
    match x:
        case y:
            pass
print(dis.dis(m))
"""
输出：
  2           0 RESUME                   0

  3           2 LOAD_CONST               1 (123)
              4 LOAD_CONST               2 (456)
              6 BUILD_LIST               2
              8 STORE_FAST               0 (x)

  4          10 LOAD_FAST                0 (x)

  5          12 STORE_FAST               1 (y)

  6          14 RETURN_CONST             0 (None)
None

"""