擅长:python、mysql、java
<p>在python中,它们指定了不同类型的数据结构</p>
<p><code>{}</code>是一个<a href="https://docs.python.org/3/tutorial/datastructures.html#dictionaries" rel="nofollow noreferrer">dictionary</a></p>
<p><code>[]</code>是一个<a href="https://docs.python.org/3/tutorial/datastructures.html" rel="nofollow noreferrer">list</a></p>
<p>例如</p>
<pre><code>my_list = ["a", "b", "c"]
my_dict = {"a": "apple", "b": "banana", "c": "clementine"}
print(my_list[0])
>>> "a"
print(my_dict["a"])
>>> "apple"
</code></pre>