title: How to get the variable names of pairwise combinations?
body: <p>I have multiple pairwise comparisons to do in order to find common items between the lists. My code below works. However, I would like to keep track of the names of the lists. which are geno1, geno2 and geno3. I'm not sure how to get the combinations refering to the variable names instead of the arrays. Although there are related questions on Stack overflow such as <a href="https://stackoverflow.com/questions/31377433/getting-method-parameter-names/31377793#31377793">Getting method parameter names</a>, I'm hoping to get a quite easy solution.Thank you in advance for your time.</p>
  <pre><code>import itertools #to get all pairwise combinations
  geno1 = [1,2,3]
  geno2 = [2,5]
  geno3 = [1,2,4,5]
  genotypes = [geno1,geno2,geno3]
  combinations = list(itertools.combinations(genotypes,2))
  
  
  for pair in combinations:
      commonItem = [x for x in pair[0] if x in pair[1]]
      print(f'{len(commonItem)} common items between {pair}')#Here instead of pair I want to know which pair of genotypes such as geno1 geno2, or geno1 geno3.
      print(commonItem)
      print()
  </code></pre>