擅长:python、mysql、java
<p>你可以试试这样的。你知道吗</p>
<pre><code>raw_grades = ["D 85", "D 100", "M 20", "D 70"]
chars_to_replace = ["D", "M"]
sanitized_grades = []
for i in raw_grades:
for char in chars_to_replace:
i = i.replace(char,"")
sanitized_grades.append(i.strip())
print(sanitized_grades) # ['85', '100', '20', '70']
</code></pre>
<p>希望这有帮助。你知道吗</p>