如何在julia中更改字典的关键字？

# 原字典
dict = Dict("key1" => 1, "key2" => 2, "key3" => 3)

# 创建一个新的字典
new_dict = Dict()

# 遍历原字典的键值对，并将其复制到新字典中
for (key, value) in dict
    new_key = key * "_new"  # 修改关键字
    new_dict[new_key] = value
end

# 打印新字典
println(new_dict)

Dict("key1_new" => 1, "key2_new" => 2, "key3_new" => 3)