python 哈希表怎么创建

在Python中，可以使用列表和哈希函数来创建哈希表。以下是一个示例：

hash_table = [None * 10  # 初始大小为10的哈希表，初始值为None

def hash_function(key):
    return hash(key) % len(hash_table)  # 使用Python内置哈希函数，对哈希表大小进行取模

# 插入数据
key = 'apple'
value = 1
index = hash_function(key)
hash_table[index = value

# 查找数据
key = 'apple'
index = hash_function(key)
result = hash_table[index]
print(result)  # 输出1

# 删除数据
key = 'apple'
index = hash_function(key)
hash_table[index = None

这段代码首先创建了一个大小为10的哈希表，用None初始化每个槽位。然后定义了一个哈希函数，该函数使用Python内置的哈希函数对键进行哈希，并对哈希表的大小取模，以确定数据应该插入到哪个槽位。接下来，通过调用哈希函数来插入、查找和删除数据。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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