笨方法學Python裏的字典那道習題，冒號出錯，請給位指點下啊

應該是用大括號的

#?create?a?mapping?of?state?to?abbreviation

states?=?{

'Oregon':?'OR',

'Florida':?'FL',

'California':?'CA',

'New?York':?'NY',

'Michigan':?'MI'

}

#?create?a?basic?set?of?states?and?some?cities?in?them

cities?=?{

'CA':?'San?Francisco',

'MI':?'Detroit',

'FL':?'Jacksonville'

}