# clear builtins._
# clear sys.path
# clear sys.argv
# clear sys.ps1
# clear sys.ps2
# clear sys.last_type
# clear sys.last_value
# clear sys.last_traceback
# clear sys.path_hooks
# clear sys.path_importer_cache
# clear sys.meta_path
# clear sys.flags
# clear sys.float_info
# restore sys.stdin
# restore sys.stdout
# restore sys.stderr
# cleanup __main__
# cleanup[1] reprlib
# cleanup[1] site
# cleanup[1] sysconfig
# cleanup[1] io
# cleanup[1] abc
# cleanup[1] token
# cleanup[1] sre_constants
# cleanup[1] sitecustomize
# cleanup[1] keyword
# cleanup[1] traceback
# cleanup[1] weakref
# cleanup[1] _weakrefset
# cleanup[1] linecache
# cleanup[1] tokenize
# cleanup[2] heapq
# cleanup[2] sre_compile
# cleanup[2] _collections
# cleanup[2] locale
# cleanup[2] _sre
# cleanup[2] functools
# cleanup[2] operator
# cleanup[2] encodings
# cleanup[2] copyreg
# cleanup[2] _heapq
# cleanup[2] _weakref
# cleanup[2] posixpath
# cleanup[2] errno
# cleanup[2] re
# cleanup[2] encodings.latin_1
# cleanup[2] collections
# cleanup[2] genericpath
# cleanup[2] stat
# cleanup[2] zipimport
# cleanup[2] _codecs
# cleanup[2] _bisect
# cleanup[2] encodings.utf_8
# cleanup[2] codecs
# cleanup[2] _thread
# cleanup[2] os.path
# cleanup[2] _functools
# cleanup[2] _locale
# cleanup[2] bisect
# cleanup[2] signal
# cleanup[2] _io
# cleanup[2] itertools
# cleanup[2] posix
# cleanup[2] encodings.aliases
# cleanup[2] sre_parse
# cleanup[2] os
# cleanup[2] _abcoll
# cleanup sys
# cleanup builtins
# cleanup floats: 4 unfreed floats