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First solution in Clear category for Right to Left by andriutwich
left_join = lambda p: ",".join(p).replace('right', 'left')
def test_function():
assert left_join(("left", "right", "left", "stop")) == "left,left,left,stop", "All to left"
assert left_join(("bright aright", "ok")) == "bleft aleft,ok", "Bright Left"
assert left_join(("brightness wright",)) == "bleftness wleft", "One phrase"
assert left_join(("enough", "jokes")) == "enough,jokes", "Nothing to replace"
Jan. 13, 2017
