擅长:python、mysql、java
<p>使用<code>dict.items()</code>如何:</p>
<pre><code>budgets = {'Engineering': 4500.0,
'Marketing': 5000.0,
'Operations': 3000.0,
'Sales': 2000.0}
spending = {'Engineering': 5020.0,
'Marketing': 1550.0,
'Operations': 3670.0,
'Sales': 3320.0}
for category, spent in spending.items():
print(category)
if spent > budgets[category]:
print('Over Budget')
else:
print('Under Budget')
</code></pre>