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# test builtin print function print() print(None) print('') print(1) print(1, 2) print(sep='') print(sep='x') print(end='') print(end='x\n') print(1, sep='') print(1, end='') print(1, sep='', end='') print(1, 2, sep='') print(1, 2, end='') print(1, 2, sep='', end='') print([{1:2}])