# 2207.py

def linearizzalista (a):
  v=[]
  for x in a:
    if isinstance(x,(list,tuple)):
      v.extend(linearizzalista(x))
    else: v.append(x)
  return v

a=[3,5,[6,1,5],[2,(3,5,8),6],1,(3,4)]
print linearizzalista(a)
# [3, 5, 6, 1, 5, 2, 3, 5, 8, 6, 1, 3, 4]

A=[[1,3,5],[6,8,1],[4,5,3]]
print linearizzalista(A)
# [1, 3, 5, 6, 8, 1, 4, 5, 3]