擅长:python、mysql、java
<h3>设置</h3>
<pre><code>from StringIO import StringIO
import pandas as pd
import numpy as np
text = """Date AAPL F IBM
2016-05-02 93.073328 13.62 143.881476
2016-05-03 94.604009 13.43 142.752373
2016-05-04 93.620002 13.31 142.871221
2016-05-05 93.239998 13.32 145.070003
2016-05-06 92.720001 13.44 147.289993"""
df = pd.read_csv(StringIO(text), delim_whitespace=True, parse_dates=[0], index_col=0)
</code></pre>
<h3>解决方案</h3>
<pre><code>df.div(df.iloc[0]).mul([20, 30, 50])
</code></pre>