old_contents: """
  Downloads and unzips the latest BNF SNOMED mapping to
  PIPELINE_DATA_BASEDIR/bnf_snomed_mapping/[yyyy_mm_dd]/
  
  Does nothing if file already downloaded.
  """
  
  import glob
  import os
  import zipfile
  
  from django.conf import settings
  from django.core.management import BaseCommand
  
  import requests
  from bs4 import BeautifulSoup
  
  from openprescribing.utils import mkdir_p
  
  
  class Command(BaseCommand):
      help = __doc__
  
      def handle(self, *args, **kwargs):
          base_url = "https://www.nhsbsa.nhs.uk"
  
          rsp = requests.get(
              base_url + "/prescription-data/understanding-our-data/bnf-snomed-mapping"
          )
          doc = BeautifulSoup(rsp.text, "html.parser")
  
          href = None
          for a in doc.find_all("a"):
              if a["href"].endswith(".zip"):
                  assert href is None, "Found more than one zipfile"
                  href = a["href"]
  
          filename = href.split("/")[-1]
          datestamp = filename.split(".")[0].split("%20")[-1]
          release_date = datestamp[:4] + "_" + datestamp[4:6] + "_" + datestamp[6:]
  
          dir_path = os.path.join(
              settings.PIPELINE_DATA_BASEDIR, "bnf_snomed_mapping", release_date
          )
          zip_path = os.path.join(dir_path, filename)
  
          if glob.glob(os.path.join(dir_path, "*.xlsx")):
              print("Already fetched")
              return
  
          mkdir_p(dir_path)
  
          rsp = requests.get(base_url + href, stream=True)
          rsp.raise_for_status()
  
          with open(zip_path, "wb") as f:
              for block in rsp.iter_content(32 * 1024):
                  f.write(block)
  
          with zipfile.ZipFile(zip_path) as zf:
              zf.extractall(dir_path)
  
new_contents: """
  Downloads and unzips the latest BNF SNOMED mapping to
  PIPELINE_DATA_BASEDIR/bnf_snomed_mapping/[yyyy_mm_dd]/
  
  Does nothing if file already downloaded.
  """
  
  import glob
  import os
  import zipfile
  
  from django.conf import settings
  from django.core.management import BaseCommand
  
  import requests
  from bs4 import BeautifulSoup
  
  from openprescribing.utils import mkdir_p
  
  
  class Command(BaseCommand):
      help = __doc__
  
      def handle(self, *args, **kwargs):
          base_url = "https://www.nhsbsa.nhs.uk"
  
          rsp = requests.get(
              base_url + "/prescription-data/understanding-our-data/bnf-snomed-mapping"
          )
          doc = BeautifulSoup(rsp.text, "html.parser")
  
          href = None
          for a in doc.find_all("a"):
              if a["href"].endswith(".zip"):
                  assert href is None, "Found more than one zipfile"
                  href = a["href"]
  
          filename = href.split("/")[-1]
          datestamp = filename.split(".")[0].split("%20")[-1]
          release_date = datestamp[:4] + "_" + datestamp[4:6] + "_" + datestamp[6:]
  
          dir_path = os.path.join(
              settings.PIPELINE_DATA_BASEDIR, "bnf_snomed_mapping", release_date
          )
          zip_path = os.path.join(dir_path, filename)
  
          if glob.glob(os.path.join(dir_path, "*.xlsx")):
              return
  
          mkdir_p(dir_path)
  
          rsp = requests.get(base_url + href, stream=True)
          rsp.raise_for_status()
  
          with open(zip_path, "wb") as f:
              for block in rsp.iter_content(32 * 1024):
                  f.write(block)
  
          with zipfile.ZipFile(zip_path) as zf:
              zf.extractall(dir_path)
  
subject: Remove output that ends up in cron alert