腾讯云api-python调用

https://cloud.tencent.com/document/product/1278/46716

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# -*- coding: utf-8 -*- import hashlib, hmac, json, os, sys, time from datetime import datetime   # 密钥参数 # 需要设置环境变量 TENCENTCLOUD_SECRET_ID，值为示例的 AKIDz8krbsJ5yK**********mLPx3EXAMPLE secret_id = os.environ.get("TENCENTCLOUD_SECRET_ID") # 需要设置环境变量 TENCENTCLOUD_SECRET_KEY，值为示例的 Gu5t9xGARN**********QYCN3EXAMPLE secret_key = os.environ.get("TENCENTCLOUD_SECRET_KEY")   service = "cvm" host = "cvm.tencentcloudapi.com" endpoint = "https://" + host region = "ap-guangzhou" action = "DescribeInstances" version = "2017-03-12" algorithm = "TC3-HMAC-SHA256" #timestamp = int(time.time()) timestamp = 1551113065 date = datetime.utcfromtimestamp(timestamp).strftime("%Y-%m-%d") params = {"Limit": 1, "Filters": [{"Name": "instance-name", "Values": [u"未命名"]}]}   # ************* 步骤 1：拼接规范请求串 ************* http_request_method = "POST" canonical_uri = "/" canonical_querystring = "" ct = "application/json; charset=utf-8" payload = json.dumps(params) canonical_headers = "content-type:%s\nhost:%s\n" % (ct, host) signed_headers = "content-type;host" hashed_request_payload = hashlib.sha256(payload.encode("utf-8")).hexdigest() canonical_request = (http_request_method + "\n" +                      canonical_uri + "\n" +                      canonical_querystring + "\n" +                      canonical_headers + "\n" +                      signed_headers + "\n" +                      hashed_request_payload) print(canonical_request)   # ************* 步骤 2：拼接待签名字符串 ************* credential_scope = date + "/" + service + "/" + "tc3_request" hashed_canonical_request = hashlib.sha256(canonical_request.encode("utf-8")).hexdigest() string_to_sign = (algorithm + "\n" +                   str(timestamp) + "\n" +                   credential_scope + "\n" +                   hashed_canonical_request) print(string_to_sign)   # ************* 步骤 3：计算签名 ************* # 计算签名摘要函数 def sign(key, msg):     return hmac.new(key, msg.encode("utf-8"), hashlib.sha256).digest() secret_date = sign(("TC3" + secret_key).encode("utf-8"), date) secret_service = sign(secret_date, service) secret_signing = sign(secret_service, "tc3_request") signature = hmac.new(secret_signing, string_to_sign.encode("utf-8"), hashlib.sha256).hexdigest() print(signature)   # ************* 步骤 4：拼接 Authorization ************* authorization = (algorithm + " " +                  "Credential=" + secret_id + "/" + credential_scope + ", " +                  "SignedHeaders=" + signed_headers + ", " +                  "Signature=" + signature) print(authorization)   print('curl -X POST ' + endpoint       + ' -H "Authorization: ' + authorization + '"'       + ' -H "Content-Type: application/json; charset=utf-8"'       + ' -H "Host: ' + host + '"'       + ' -H "X-TC-Action: ' + action + '"'       + ' -H "X-TC-Timestamp: ' + str(timestamp) + '"'       + ' -H "X-TC-Version: ' + version + '"'       + ' -H "X-TC-Region: ' + region + '"'       + " -d '" + payload + "'")