在Python中解析具有可变字段大小的字符串

s = "name:John,age:30,city:New York"
data = s.split(',')
for item in data:
    key, value = item.split(':')
    print(f"{key}: {value}")

import re

s = "name:John,age:30,city:New York"
data = re.split(r',\s*', s)
for item in data:
    key, value = item.split(':')
    print(f"{key}: {value}")

import re

s = "name:John,age:30,city:New York"
pattern = r'(\w+):([^,]+)'
matches = re.findall(pattern, s)
for key, value in matches:
    print(f"{key}: {value}")

import csv
from io import StringIO

s = "name:John,age:30,city:New York"
f = StringIO(s)
reader = csv.reader(f, delimiter=',')
for row in reader:
    key, value = row[0].split(':')
    print(f"{key}: {value}")

import json

s = '{"name":"John","age":30,"city":"New York"}'
data = json.loads(s)
for key, value in data.items():
    print(f"{key}: {value}")