Что собой представляет переменная t в результате выполнения следующего кода

 words=['one','two','three']def sort_by_length(words):    t = list()    for word in words:        t.append((len(word), word)) 

 words=['one','two','three']def sort_by_length(words):    t = list()    for word in words:        t.append((len(word), word)) 

 words=['one','two','three']def sort_by_length(words):    t = list()    for word in words:        t.append((len(word), word)) 

  myDict = {0:'zero',1:'one',2:'two',3:'three'} myKeys=myDict.keys() 

  myDict = {0:'zero',1:'one',2:'two',3:'three'} myKeys=myDict.keys() 

  myDict = {0:'zero',1:'one',2:'two',3:'three'} myKeys=myDict.keys() 

 myDict = {0:'zero',1:'one',2:'two',3:'three'}myList=list() for key, val in myDict.items()     myList.append(val,key)x = myList[0] 

 myDict = {0:'zero',1:'one',2:'two',3:'three'}myList=list() for key, val in myDict.items()     myList.append(val,key)x = myList[1] 

 myDict = {0:'zero',1:'one',2:'two',3:'three'}myList=list() for key, val in myDict.items()     myList.append(val,key)x = myList[2]