擅长:python、mysql、java
<p>您可以使用前面的if语句快速删除一个循环:</p>
<pre><code>for index, row in df.iterrows():
if df['budget'].iloc[index] == 0:
for index1, row1 in df1.iterrows():
if df['production_companies'].iloc[index] == df1['production_companies'].iloc[index1] and df['release_date'].iloc[index].year == df1['release_year'].iloc[index1] :
df['budget'].iloc[index] = df1['mean'].iloc[index1]
</code></pre>