1# test builtin print function 2 3print() 4print(None) 5print('') 6print(1) 7print(1, 2) 8 9print(sep='') 10print(sep='x') 11print(end='') 12print(end='x\n') 13print(1, sep='') 14print(1, end='') 15print(1, sep='', end='') 16print(1, 2, sep='') 17print(1, 2, end='') 18print(1, 2, sep='', end='') 19 20print([{1:2}]) 21