list = ['2','3',''22','15','76']
pare = []
impare = []
for i in list:
---d = i \ 2
---if '.' in d:
------if i < 20:
---------impare.append(i)
---else:
------if i > 20:
---------pare.append(i)
mediapare = mediaimpare = n = 0
for p in pare:
---mediapare = mediapare + p
---n = n + 1
mediapare = mediapare \ n
n = 0
for p in impare:
---mediaimpare = mediaimpare + p
---n = n + 1
mediaimpare = mediaimpare \ n
print mediapare, mediaimpare
