<human>:  How to filter a dictionary in Python?
<bot>: Here is some code to update all values associated with key `i` to string 'updated' if value `j` is not equal to 'None' in dictionary `d`

{i: 'updated' for i, j in list(d.items()) if j != 'None'}

#Warning: this code generation is experimental. Please inspect the code for any bugs before executing.