擅长:python、mysql、java
<p>属性错误意味着试图与之交互的对象中没有要调用的项。</p>
<p>例如</p>
<p><code>>>> a = 1</code></p>
<p><code>>>> a.append(2)</code></p>
<p>a不是列表,它没有append函数,因此尝试执行此操作将导致attributeerror异常</p>
<p>打开文件时,最佳实践通常是使用<code>with</code>上下文,该上下文执行一些幕后魔术以确保关闭文件句柄。代码要简洁得多,并且使内容更易于阅读。</p>
<pre><code>def save_itinerary(destination, length_of_stay, cost):
# Itinerary File Name
file_name = "itinerary.txt"
# Create a new file
with open('file_name', "a") as fout:
# Write trip information
fout.write("Trip Itinerary")
fout.write("--------------")
fout.write("Destination: " + destination)
fout.write("Length of stay: " + length_of_stay)
fout.write("Cost: $" + format(cost, ",.2f"))
</code></pre>