买了腾讯云之后

import requests

# 设置API密钥和请求URL
secret_id = 'YOUR_SECRET_ID'
secret_key = 'YOUR_SECRET_KEY'
url = 'https://cvm.tencentcloudapi.com/'

# 构建请求参数
params = {
    'Action': 'RunInstances',
    'Version': '2017-03-12',
    'Region': 'ap-guangzhou',
    'InstanceType': 'S1.LARGE8',
    'ImageId': 'img-pmqg1cw7',
    'SystemDisk': {'DiskType': 'CLOUD_PREMIUM', 'DiskSize': 50},
    'InternetAccessible': {'InternetMaxBandwidthOut': 1, 'PublicIpAssigned': True},
    'InstanceCount': 1,
    'InstanceName': 'TestInstance',
    'LoginSettings': {'Password': 'YourStrongPassword'},
    'SecurityGroupIds': ['sg-xxxxxx'],
}

# 签名请求
import hashlib
import hmac
import time

timestamp = int(time.time())
params['Timestamp'] = timestamp
params['Nonce'] = 123456
params['SecretId'] = secret_id

sorted_params = sorted(params.items(), key=lambda x: x[0])
query_string = '&'.join(['{}={}'.format(k, v) for k, v in sorted_params])
string_to_sign = 'POSTcvm.tencentcloudapi.com/?' + query_string
signature = hmac.new(secret_key.encode('utf-8'), string_to_sign.encode('utf-8'), hashlib.sha1).digest()
signature = base64.b64encode(signature).decode('utf-8')

params['Signature'] = signature

# 发送请求
response = requests.post(url, data=params)
print(response.json())