python:core> $C
00007fec06f4ae30 libc.so.1`t_splay+0x1c()
00007fec06f4ae50 libc.so.1`t_delete+0x26()
00007fec06f4ae90 libc.so.1`realfree+0x64()
00007fec06f4aeb0 libc.so.1`_free_unlocked+0x90()
00007fec06f4aed0 libc.so.1`free+0x32()
00007fec06f4af00 libpython3.7m.so.1.0`PyDict_Clear+0x123()
00007fec06f4af10 libpython3.7m.so.1.0`dict_tp_clear+9()
00007fec06f4b000 libpython3.7m.so.1.0`collect+0x5a8()
00007fec06f4b020 libpython3.7m.so.1.0`_PyGC_CollectNoFail+0x38()
00007fec06f4b0a0 libpython3.7m.so.1.0`PyImport_Cleanup+0x297()
00007fec06f4b0e0 libpython3.7m.so.1.0`Py_FinalizeEx+0x7c()
00007fec06f4b100 libpython3.7m.so.1.0`Py_Exit+0x10()
00007fec06f4b150 libpython3.7m.so.1.0`handle_system_exit+0x95()
00007fec06f4b1e0 libpython3.7m.so.1.0`PyErr_PrintEx+0x2b()
00007fec06f4b260 libpython3.7m.so.1.0`PyRun_SimpleFileExFlags.cold.10+0x70()
00007fec06f4b340 libpython3.7m.so.1.0`pymain_main+0x36c()
00007fec06f4b3b0 libpython3.7m.so.1.0`_Py_UnixMain+0x30()
00007fec06f4b3c0 _start+0x43()