擅长:python、mysql、java
<p>熊猫回答:</p>
<pre><code>import pandas as pd
df = pd.read_csv(sep="\n", header=None, names = ['code'])
regex = "[^ATCG]+\\b" # Regex that gets eveything that's not a DNA code.
filter = df['code'].str.contains(regex)
df = df[~filter] # Keep only the DNA codes.
</code></pre>