Python programming problem!

Suppose that there is a json file called data from the desktop. I want to print the value with the key of "year" and "country".

Json file below:

{

"A":{

"year":11,

"grade":A,

"country":America},

"B":{

"year":18,

"grade":C,

"country":England},

"C":{

"year":19,

"grade":B,

"country":China},}

I want a code that I can only replace the name of key from year to grade and the code could be work.