擅长:python、mysql、java
<p>也许是这样吧</p>
<pre><code>import pandas as pd
data = {'name': ['Jova', 'Mimi', 'Taty', 'Jessica', 'Alex'],
'year': [2012, 2012, 2013, 2014, 2014],
'docs': [40, 24, 19, 2, 3]}
df = pd.DataFrame(data, index = ['bg', 'ny', 'sd', 'sp', 'la'])
print (df)
print (df.name.unique())
</code></pre>