def incrementKeyCount$(D,$ key$)$:

$\text{'}\text{'}$ Function that takes in a Dictionary object $($D$)$ containing KEY: VALUE

pairs where the VALUE is a count representing the number of times the KEY

is incremented.

If the parameter key does not exist in D$,$ then a new KEY: VALUE

pair is created in D with key:$1($the first time the key is incremented$).$

If the parameter key does exist in D$,$ then the key's VALUE is

incremented by $1.$

Note that since dictionaries are mutable, this function does

not return a value.

Consider using the in operator to check if a key exists in a Dictionary

Assert examples below illustrate correct behavior for this function

$\text{'}\text{'}\text{'}$

# COMPLETE YOUR FUNCTION DEFINITION HERE

dict$1=\{\}$

assert len$($dict$1)=0$

assert incrementKeyCount$($dict$1,"$CS$8")==$ None

assert len$($dict$1)=1$

assert $("$CS$8"$ in dict$1)==$ True

assert dict$1["$CS$8"]==1$

assert incrementKeyCount$($dict$1,"$CS$8")==$ None

assert len$($dict$1)==1$

assert dict$1["$CS$8"]==2$

assert incrementKeyCount$($dict$1,$ "MATH$3$A$")==$ None

assert len$($dict$1)==2$

assert $("$MATH$3$A$"$ in dict$1)==$ True

assert dict$1["$MATH$3$A$"]==1$