擅长:python、mysql、java
<p>这样做很容易。请确保日期已正确转换为日期时间</p>
<pre><code>df["Shipment Dt"] = pd.to_datetime(df["Shipment Dt"])
df["theoretical ship date"] = pd.to_datetime(df["theoretical ship date"])
df['on time'] = (df['Shipment Dt'] <= df['theoretical ship date']).astype(int)
</code></pre>
<P>如果您想使用lambda,则使用轴=1来考虑轴1中的数据文件。<p>
<pre><code>df['on time'] = df.apply(lambda x: int(x['Shipment Dt']<=x['theoretical ship date']),axis=1)
</code></pre>