擅长:python、mysql、java
<p><a href="https://pandas.pydata.org/pandas-docs/stable/dsintro.html" rel="nofollow noreferrer">Pandas DataFrame docs</a></p>
<blockquote>
<p><strong>DataFrame</strong> is a 2-dimensional labeled data structure with columns of potentially different types. You can think of it like a spreadsheet or SQL table, or <strong>a dict of Series objects</strong>.</p>
</blockquote>
<p>它基本上是一系列对象的dict。现在什么是序列对象?在</p>
<blockquote>
<p><strong>Series</strong> is a one-dimensional <strong>labeled array</strong> capable of holding any data type (integers, strings, floating point numbers, Python objects, etc.). The axis labels are collectively referred to as the index.</p>
</blockquote>
<p>这些数组被标记为</p>