Split dict of lists into dict of values

sep_unique.py

def sep_unique(d):
    newdict = {}
    for key, val in d.items():
      if len(val) > 1:
        for n, i in enumerate(val, 1):
          newdict[key if n == 1 else f"{key}{i}"] = i
      else:
        newdict[key] = val[0]
    return newdict
  
print(sep_unique({'foo': [1, 2], 'bar': ['3']}))

# output: {'foo': 1, 'foo2': 2, 'bar': '3'}