Given a dictionary d$,$ create a new dictionary that is the invert of d such that original key:valuepairs i:j are now related j:i$,$ but when there are nonunique values $($j$\text{'}$s$)$ in d$,$ they should not beincluded as a key:value pair in the inverted dictionary. Keys are case sensitive$.$ It returns the newinverted dictionary.Preconditions and Postconditionsd: dictReturns: dict $->$ Inverted dictionary mapping value to key, excludingnon$-$unique values You are NOT allowed to use the zip$()$ or enumerate$()$ methods. You will not get credit if youused them in your code, even if your code passed the test cases