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from pypy.interpreter.pyopcode import print_item_to, print_newline_to, sys_stdout
def displayhook(space, w_obj):
"""Print an object to sys.stdout and also save it in __builtin__._"""
if not space.is_w(w_obj, space.w_None):
space.setitem(space.builtin.w_dict, space.newtext('_'), w_obj)
# NB. this is slightly more complicated in CPython,
# see e.g. the difference with >>> print 5,; 8
print_item_to(space, space.repr(w_obj), sys_stdout(space))
print_newline_to(space, sys_stdout(space))
__displayhook__ = displayhook # this is exactly like in CPython
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