擅长:python、mysql、java
<p>您可以这样做:</p>
<pre><code>from datetime import datetime
def get_weekday(row):
date_str = "{}-{}-{}".format(row["Year"], row["Month"], row["Day"])
date = datetime.strptime(date_str, '%Y-%m-%d')
return date.weekday()
df2019["weekday"] = df2019.apply(get_weekday, axis=1)
</code></pre>