z = {**x, **y}  #python 3.5 and above  z = x | y    #python 3.9+ ONLY  def merge_two_dicts(x, y): # python 3.4 or lower       z = x.copy()   # start with x's keys and values       z.update(y)    # modifies z with y's keys and values & returns None       return z

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