擅长:python、mysql、java
<p>如果有数据帧:</p>
<pre><code>import pandas as pd
import random
df = pd.DataFrame({'first_column': [random.uniform(5,6) for x in range(10)]})
print(df)
</code></pre>
<p>给了我:</p>
<pre><code> first_column
0 5.620439
1 5.640604
2 5.286608
3 5.642898
4 5.742910
5 5.096862
6 5.360492
7 5.923234
8 5.489964
9 5.127154
</code></pre>
<p>然后检查值是否大于5.75:</p>
<pre><code>df[df > 5.75] = 100
print(df)
</code></pre>
<p>给了我:</p>
<pre><code> first_column
0 5.620439
1 5.640604
2 5.286608
3 5.642898
4 5.742910
5 5.096862
6 5.360492
7 100.000000
8 5.489964
9 5.127154
</code></pre>