python里的dictionary怎么把统计的数据变成list

我会把数据变成dictionary，但我不知道怎么把它拆开。
比如说{apple：2，banana：1}
怎么把它变成[apple，apple，banana]
感谢答疑

把字典的键取出来通过循环插入列表就行了

dic = {
    "apple":2,
    "banana":1
}

lis = []
for key in dic:
    for num in range(dic[key]):
        lis.append(key)
print(lis)

不用循环的求解方法：

>>> dic = {'apple':2, 'banana':1}
>>> lst = sum([[d] * dic[d] for d in dic.keys()],[])
>>> lst
['apple', 'apple', 'banana']
>>> 
>>> dic = {'apple':2, 'banana':1, 'peach':3}
>>> lst = sum([[d] * dic[d] for d in dic.keys()],[])
>>> lst
['apple', 'apple', 'banana', 'peach', 'peach', 'peach']

d = {'apple': 2, 'banana': 1}
l = [[key]*val for key, val in d.items()]
list = []
for lst in l:
    list.extend(lst)
print(list)