擅长:python、mysql、java
<p>可以通过<code>replace</code>完成:如果需要,修改<code>regex</code>和<code>lambda</code>函数:</p>
<pre><code>repl = {'0':'O','1':'I'}
df['Col1'] = df['Col1'].str[:7] + df['Col1'].str[7:].str.replace(r'0|1', lambda x : repl[x.group(0)], regex=True)
#or
df['Col1'] = df['Col1'].str[:7] + df['Col1'].str[7:].replace(repl, regex=True)
</code></pre>