def trim(s): kg = ' ' qkgs = 0 hkgs = 0 sd = s[::-1] for i in range(len(s)-1): if s[i] == kg: qkgs += 1 else: break for j in range(len(s)-1): if sd[j] == kg: hkgs += 1 else: break s = s[qkgs:(len(s)-hkgs)] return s