python - 如何从列表创建字典

Question

我有一个句子列表，我想将其转换为仅包含用户名和年龄的词典。

list=['@David, the age is 27', '@John, the age is 99', '@rain, the age is 45']

我想要得到的输出是像这样的字典

dic={David:27,John:99,rain:45}

感谢您的帮助

Answer 1

您可以定义一个自定义函数，通过map将其应用到每个字符串，然后输入到dict:

L = ['@David, the age is 27', '@John, the age is 99', '@rain, the age is 45']

def key_value_extractor(x):
    x_split = x.split(',')  # split by ','
    name = x_split[0][1:]   # take 1st split and exclude first character
    age = int(x_split[1].rsplit(maxsplit=1)[-1])  # take 2nd, right-split, convert to int
    return name, age

res = dict(map(key_value_extractor, L))

{'David': 27, 'John': 99, 'rain': 45}