擅长:python、mysql、java
<p>您正在附加<code>item</code>,它在函数的上下文中不存在。必须附加要迭代的项:</p>
<pre><code>B = ["blue", "blue", "red", "green", "red", "blue", "yellow", "green", "blue", "red"]
def makeUnique(list):
unique = []
for i in range(0, len(list)):
if list[i] not in unique:
unique.append(list[i])
return unique
print(makeUnique(B)) # ['blue', 'red', 'green', 'yellow']
</code></pre>