title: make python sort / compare the same way as GNU sort
body: <p>It seems after some first tests, that Python is using the same sorting order as Linux sort (gnu sort) with the C sorting order (if the locale is set to "C").</p>
  
  <p>However I'd like to be able to write  Python code that is sorting and comparing the same way as gnu sort depending on the locale.</p>
  
  <p>Small example code to illustrate the issue:</p>
  
  <pre><code>import os 
  import subprocess
  
  words = [
      "Abd",
      "éfg",
      "aBd",
      "aBd",
      "zzz",
      "ZZZ",
      "efg",
      "abd",
      "fff",
      ]
  
  with open("tosort", "w") as fout:
      for word in words:
          fout.write(word + "\n")
  
  os.environ["LC_ALL"] = "en_US.UTF-8" 
  proc = subprocess.Popen(["sort", "tosort"], stdout=subprocess.PIPE)
  sort_en_utf = proc.stdout.read().decode('utf-8').split()
  
  os.environ["LC_ALL"] = "C" 
  proc = subprocess.Popen(["sort", "tosort"], stdout=subprocess.PIPE) 
  sort_c = proc.stdout.read().decode('utf-8').split()
  
  os.environ["LC_ALL"] = "en_US.UTF-8"
  sort_py = sorted(words)
  
  for row in zip(sort_en_utf, sort_c, sort_py):
      print(" ".join(row))
  </code></pre>
  
  <p>If above code is run I get following output:</p>
  
  <pre><code>abd Abd Abd
  aBd ZZZ ZZZ
  aBd aBd aBd
  Abd aBd aBd
  efg abd abd
  éfg efg efg
  fff fff fff
  zzz zzz zzz
  ZZZ éfg éfg
  </code></pre>
  
  <p>column 1 is the sorting / comparing order that I'd like to have in my python code if the locale is "en_US.UTF-8" column 2 and 3 show, that python sorts the same way as linux' sort if the locale is set to "C".</p>
  
  <p>So I'd also like, to know whether there is a way to have:</p>
  
  <p><code>"éfg" &lt; "fff"</code> yield True. I don't insist on a compare operator I can also call a function.
  but the ordering result should be considering  the current locale.</p>