<h2>1.使用for或while循环(按要求)</h2>
<pre><code>>>> data = {'Jeremy': 73284, 'Hansel': 8784.3, 'Uee': 9480938.2, 'Seolhyun': 984958.3, 'Ketsuno Ana': 24131, 'Trump': 45789}
>>>
>>> max_k = None
>>> max_v = None
>>> for k, v in data.items():
... if max_v is None or v > max_v:
... max_v = v
... max_k = k
...
>>> print(max_k)
Uee
</code></pre>
<h2>2.使用<a href="https://docs.python.org/3/library/functions.html#max" rel="nofollow noreferrer">^{<cd1>}</a></h2>
<p><strong>Python 2</strong></p>
<pre><code>>>> import operator
>>> data = {'Jeremy':73284, 'Hansel':8784.3, 'Uee':9480938.2, 'Seolhyun':984958.3, 'Ketsuno Ana':24131, 'Trump':45789}
>>> max(data.iteritems(), key=operator.itemgetter(1))[0]
'Uee'
</code></pre>
<p><strong>Python 3</strong></p>
<pre><code>>>> import operator
>>> data = {'Jeremy':73284, 'Hansel':8784.3, 'Uee':9480938.2, 'Seolhyun':984958.3, 'Ketsuno Ana':24131, 'Trump':45789}
>>> max(data.items(), key=operator.itemgetter(1))[0]
'Uee'
</code></pre>
<p><strong>编辑</p>
<h2>使用max()更简单</h2>
<pre><code>>>> data = {'Jeremy': 73284, 'Hansel': 8784.3, 'Uee': 9480938.2, 'Seolhyun': 984958.3, 'Ketsuno Ana': 24131, 'Trump': 45789}
>>> max(data)
'Uee'
</code></pre>