擅长:python、mysql、java
<p>看来你需要<a href="http://pandas.pydata.org/pandas-docs/stable/generated/pandas.Series.replace.html" rel="noreferrer">^{<cd1>}</a>:</p>
<pre><code>print (df)
val
0 HF - Antartica
1 HF - America
2 HF - Asia
print (df.val.replace({'HF -':'Hi'}, regex=True))
0 Hi Antartica
1 Hi America
2 Hi Asia
Name: val, dtype: object
</code></pre>
<p>与<a href="http://pandas.pydata.org/pandas-docs/stable/generated/pandas.Series.str.replace.html" rel="noreferrer">^{<cd2>}</a>类似的解决方案:</p>
<pre><code>print (df.val.str.replace('HF -', 'Hi'))
0 Hi Antartica
1 Hi America
2 Hi Asia
Name: val, dtype: object
</code></pre>