擅长:python、mysql、java
<p>如果有很多大数据帧,可以使用多个线程。我建议使用<em>pathos</em>模块(可以使用<em>pip install pathos</em>安装):</p>
<pre><code>from pathos.multiprocessing import ThreadPool
# create a thread pool with the max number of threads
tPool = ThreadPool()
# apply the same function to each df
# the function applies to your list of dataframes
newDFs = tPool.map(lambda df: df.reindex(newIndex),dfs)
</code></pre>