擅长:python、mysql、java
<p>如果您试图编辑csv本身,可以尝试以下操作:</p>
<pre><code>import pandas as pd
path = 'test.csv' #path of the .csv
df = pd.read_csv(path) #reads the file
df['onset'] = df['onset'].astype(str) +' 2020' #Add the year
df.to_csv("test.csv", index=False) #modify the file
</code></pre>
<p>或者,如果要编辑从该csv导入的数据帧,可以尝试以下操作:</p>
<pre><code>import pandas as pd
path = 'test.csv'
path = 'pathofthecsv'
df = pd.read_csv(path) #reads the file
df['onset'] = df['onset'].astype(str) +' 2020' #Add the year
</code></pre>