擅长:python、mysql、java
<p>你可以用熊猫和裸体。在这里,我从头开始创建一个数据帧,但您可以直接从.csv加载它:</p>
<pre><code>import pandas as pd
import numpy as np
date_df = pd.DataFrame(
{'col1' : ['12', '14', '14', '3412', '2'],
'col2' : ['2018-09-30', '2018-09-14', '2018-09-01', '2018-09-30', '2018-12-01']
})
date_to_change = '2018-09-30'
replacement_date = '2018-10-01'
date_df['col2'] = np.where(date_df['col2'] == date_to_change, replacement_date, date_df['col2'])
</code></pre>