擅长:python、mysql、java
<p>使用替换:</p>
<p><a href="http://pandas.pydata.org/pandas-docs/dev/generated/pandas.DataFrame.replace.html" rel="nofollow">http://pandas.pydata.org/pandas-docs/dev/generated/pandas.DataFrame.replace.html</a></p>
<pre><code> df = pd.DataFrame({'A':['string1','string2','string3'],
'B':['StringA','StringB','StringC']})
</code></pre>
<p>创建:</p>
^{pr2}$
<p>然后在字典中映射替换项:</p>
<pre><code>to_replace = {'string1':'replace1','StringC':'replaceC'}
</code></pre>
<p>然后更换:</p>
<pre><code> df.replace(to_replace)
A B
0 replace1 StringA
1 string2 StringB
2 string3 replaceC
</code></pre>