# 1602.py

v=['A','D','E','N']

e=enumerate(v)
print e
# <enumerate object at 0x1f726c>

a=list(enumerate(v))
b=zip(xrange(len(v)),v)
print a==b
# True

# Infatti:
print a
# [(0,'A'), (1,'D'), (2,'E'), (3,'N')]

print b
# [(0,'A'), (1,'D'), (2,'E'), (3,'N')]

#######################################

v=[8,13,0,5,17,8,6,24,6,15,3]

s=0
for i,x in enumerate(v):
  if x>10: s+=i
print s
# 21, perche' sono maggiori di 10
# gli elementi con gli indici
# 1,4,7,9 e 1+4+7+9=21.