Use of global variables, break or continue statements in loops $($while these statements are useful to provide multiple exit points in loops, they are highly abused when starting to program instead of defining a meaningful continuation condition. None of the problems in this course involve complex exit points, hence, their use is prohibited in all components of this course$)$

Question #$7$: employee$\_$update$(d,$ bonus, year$)$

Modifies the given dictionary $d$ by adding another key:value assignment for all employees but

with a bonus for the next year. You can assume the previous year exists in the dictionary.

Preconditions and Postconditions

$d$ : dict

bonus: int$/$float

year: int

Returns: dict $$ adds the key:value pair with bonus applied

Recommended methods:

dict.keys$(),$ returns all the keys in a dictionary

'one': $1,$ 'two': $2,$ 'three': $3,$ 'four':$4\})$

$$ D$.$keys$()$ returns $[\text{'}$one$\text{'},$ 'two', 'three', 'four'$]$

List concatenation $(+)$ or append method

Tip: Dictionaries, just like lists, are mutable, so saving a reference to a dictionary, say $],$

mapping $x$ to another key in $d$ and then changing information in $x,$ will also change the data in

$d[2020],$ which is not a desirable behavior. When adding a new key, create new dictionaries and

lists and populate them with the required data.

Examples:

$$ records

$2020$:$\{"$John$"$: $["$Managing Director", "Full$-$time", $65000],$ "Sally":$["$HR Director", "Full$-$

time", $60000],$ "Max": $["$Sales Associate", "Part$-$time", $20000]\},$

$2021$:$\{"$John$"$: $["$Managing Director", "Full$-$time", $70000],$ "Sally":$["$HR Director", "Full$-$

time",$65000],$ "Max": $["$Sales Associate", "Part$-$time", $25000]\}\}$

$>$ employee$\_$update$($records$,7500,2022)$

$\{2020$: $\{\text{'}$John$\text{'}$: $[\text{'}$Managing Director', 'Full$-$time', $65000],$ 'Sally': $[\text{'}$HR Director', 'Full$-$

time', $60000],$ 'Max': $[\text{'}$Sales Associate', 'Part$-$time', $20000]\},$

$2021$: $\{\text{'}$John$\text{'}$: $[\text{'}$Managing Director', 'Full$-$time', $70000],$ 'Sally': $[\text{'}$HR Director', 'Full$-$

time', $65000],$ 'Max': $[\text{'}$Sales Associate', 'Part$-$time', $25000]\},$

$2022$: $\{\text{'}$John$\text{'}$: $[\text{'}$Managing Director', 'Full$-$time', $77500],$ 'Sally': $[\text{'}$HR Director', 'Full$-$

time', $72500],$ 'Max': $[\text{'}$Sales Associate', 'Part$-$time', $32500]\}\}$