擅长:python、mysql、java
<p>我想最简单的方法是将csv文件作为数据帧读取,然后使用<code>value_counts()</code>函数</p>
<p><a href="https://stackoverflow.com/questions/22391433/count-the-frequency-that-a-value-occurs-in-a-dataframe-column">Count the frequency that a value occurs in a dataframe column</a></p>
<pre class="lang-py prettyprint-override"><code>import pandas as pd
def Readtoarray():
df = pd.read_csv('Book1.csv')
x = df["Dates"].value_counts() # assuming the column is called Dates
</code></pre>