Standard input is empty

  2           0 LOAD_CONST               0 (1)
              3 STORE_NAME               0 (a)

  3           6 LOAD_CONST               1 (2)
              9 STORE_NAME               1 (b)

  4          12 LOAD_CONST               2 (3)
             15 STORE_NAME               2 (c)

  5          18 LOAD_CONST               3 (4)
             21 STORE_NAME               3 (d)

  7          24 LOAD_NAME                0 (a)
             27 LOAD_NAME                1 (b)
             30 LOAD_NAME                2 (c)
             33 LOAD_NAME                3 (d)
             36 BUILD_TUPLE              4
             39 UNPACK_SEQUENCE          4
             42 STORE_NAME               3 (d)
             45 STORE_NAME               2 (c)
             48 STORE_NAME               1 (b)
             51 STORE_NAME               0 (a)
             54 LOAD_CONST               4 (None)
             57 RETURN_VALUE
None