Python 3.14 新特性实战之模式匹配与性能优化

def process_api_response(response):
    match response:
        case {"status": 200, "data": {"user": str(name), "roles": [*roles]}}:
            return f"用户 {name}，角色: {', '.join(roles)}"
        case {"status": 401 | 403}:
            return "认证失败"
        case {"status": int(code)}:
            return f"服务器错误: [code]"

import time
def compute_fib(n):
    a, b = 0, 1
    for _ in range(n):
        a, b = b, a + b
    return a
# JIT 加速循环密集型操作
start = time.perf_counter()
result = compute_fib(100000)
print(f"耗时: {time.perf_counter() - start:.3f}s")

def validate_input(data: dict) -> None:
    errors = []
    if "name" not in data:
        errors.append(ValueError("缺少 name 字段"))
    if "email" not in data:
        errors.append(ValueError("缺少 email 字段"))
    if errors:
        raise ExceptionGroup("输入验证失败", errors)
try:
    validate_input({"name": "test"})
except* ValueError as e:
    print(f"捕获 ValueError 组: {e.exceptions}")