擅长:python、mysql、java
<p>如何使用字典理解和解包:</p>
<pre><code>df['Race'] = df['Race'].map({
'Black or African American' : 'Black',
'White' : 'White',
'Hispanic or Latino': 'Non-White Hispanic',
**{i: 'Asian/Pacific Islander' for i in ('Asian', 'Asian/Indian/Pacific Islander', 'Native Hawaiian or Other Pacific Islander')},
**{i: 'Multiracial/other' for i in ('American Indian or Alaska Native', 'Other/Mixed')},
'Unspecified' : np.nan
})
</code></pre>