如何从API颤动中过滤特定数据？

import requests
import statistics

def fetch_data_from_api(url):
    response = requests.get(url)
    if response.status_code == 200:
        return response.json()
    else:
        raise Exception("Failed to fetch data from API")

def filter_data(data, key, threshold=2):
    values = [item[key] for item in data]
    mean = statistics.mean(values)
    stdev = statistics.stdev(values)
    filtered_data = [item for item in data if abs(item[key] - mean) <= threshold * stdev]
    return filtered_data

# 示例API URL
api_url = "https://example.com/api/data"

try:
    data = fetch_data_from_api(api_url)
    filtered_data = filter_data(data, 'value')
    print("Filtered Data:", filtered_data)
except Exception as e:
    print("Error:", e)