python django how to merge two dict

 https://stackoverflow.com/questions/38987/how-do-i-merge-two-dictionaries-in-a-single-expression

For dictionaries x and y, their shallowly-merged dictionary z takes values from y, replacing those from x.

• In Python 3.9.0 or greater (released 17 October 2020, PEP-584, discussed here):

  z = x | y
  

• In Python 3.5 or greater:

  z = {**x, **y}