楽天の在庫API（InventoryAPI）にPythonで在庫情報を取得してみた

import zeep, base64
import requests
import time
import urllib.request
import urllib.error
import defusedxml.ElementTree as ET
import datetime

#楽天のアクセスキー
serviceSecret = 'hogehoge'
licenskey =  'hogehoge'
b64 = serviceSecret + ':' + licenskey
b64_en = base64.b64encode(b64.encode())
api_key = b'ESA ' + b64_en
api_key_str = str(api_key)
api_key_str = api_key_str[2:]
api_key_str = '' + api_key_str[:-1] + ''

# 設定値
url = 'https://api.rms.rakuten.co.jp/es/1.0/inventory/ws'
headers = {'Content-Type': 'text/xml;charset=UTF-8'}
method = 'POST'
shop_url = 'hogehoge'   #店舗のshop_url


def get_item_stock(shop_url, item_id):
    body = """<!--?xml version="1.0" encoding="UTF-8"?-->
     <soap-env:envelope xmlns:soap-env="http://schemas.xmlsoap.org/soap/envelope/" 
xmlns:ns1="java:jp.co.rakuten.rms.mall.inventoryapi.v1.model.entity" 
xmlns:ns2="https://inventoryapi.rms.rakuten.co.jp/rms/mall/inventoryapi"
 xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ns3="java:language_builtins.lang">
    <soap-env:body>
    <ns2:getinventoryexternal><ns2:externaluserauthmodel>"""
    body += api_key_str
    body += """
    <ns1:username>?</ns1:username>
    <ns1:shopurl>
    body += shop_url
    body += """</ns1:shopurl>
    <ns2:getrequestexternalmodel>
    <ns1:inventorysearchrange xsi:nil="true">
    <ns1:itemurl>
    <ns3:string>"""
    body += item_id
    body += """</ns3:string></ns1:itemurl>
    </ns1:inventorysearchrange></ns2:getrequestexternalmodel> 
    """

    response = requests.post(url, data=body, headers=headers)
    xml_data = response.content.decode('utf-8')
    return xml_data
    
    
if __name__=="__main__":
    xml = get_item_stock(shop_url, item_id)