Python 使用字典的嵌套列表理解,python,python-3.x,dictionary,list-comprehension,Python,Python 3.x,Dictionary,List Comprehension,我有这样一份清单： mydict = { 'Alpha' : {'l':'a','n':1,'q':3,'z':4}, 'Beta' : {'l':'b','n':2,'q':2,'z':5}, 'Gamma' : {'l':'c','n':3,'q':1,'z':6} } # Or mydict = {'Alpha': {'l': 'a', 'n': 1, 'q':3, 'z':4}, 'B