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.
---------------------------------------
def sommatrigonometrica (a,x):
  s=0
  for n,an in enumerate(a):
    s+=an*math.cos(n*x)
  return s

a=[2,3,0,4,7,1,3]

print sommatrigonometrica(a,0.2)
# 14.7458647279
---------------------------------------
a='ABCDabcd'
print map(ord,a)
# [65, 66, 67, 68, 97, 98, 99, 100]
---------------------------------------
u=map(lambda x: x**2, xrange(10))
print u
# [0, 1, 4, 9, 16, 25, 36, 49, 64, 81]
---------------------------------------
def vocale (x):
  return x.lower() in 'aeiou'

print map(vocale,'Crema')
# [False, False, True, False, True]
---------------------------------------
def grafico (f,a):
  return zip(a,map(f,a))

a=(0,1,2,3)
print grafico(lambda x: x**4,a)
# [(0, 0), (1, 1), (2, 16), (3, 81)]
---------------------------------------
a=(88,20,17,4,58)
v=map(str,a)
print v
# ['88', '20', '17', '4', '58']

print ' '.join(v)
# 88 20 17 4 58
---------------------------------------
def diagonale (a,n=2):
  return map(lambda x: (x,)*n,a)
# Non dimenticare la virgola.

a=(2,3,5,6)
print diagonale(a)
# [(2, 2), (3, 3), (5, 5), (6, 6)]
---------------------------------------
def dnanumerico (x):
  x=x.lower()
  sost={'g': 0, 'a': 1, 'c': 2, 't': 3}
  return sost[x]

g='TGAATGCTAC'
print map(dnanumerico,g)
# [3, 0, 1, 1, 3, 0, 2, 3, 1, 2]
---------------------------------------
def cesare (a):
  o=ord('A')
  def codifica(x):
    n=(ord(x)-o+3)%26
    return chr(o+n)
  v=map(codifica,a)
  return ''.join(v)

a='CRASCASTRAMOVEBO'
print cesare(a)
# FUDVFDVWUDPRYHER
---------------------------------------
a=map(lambda i:
  map (lambda j:
    i==j,xrange(4)), xrange(4))
for x in a: print x
---------------------------------------
a=map(lambda i:
  map (lambda j:
    (i==j)+0,xrange(4)), xrange(4))
for x in a: print x
---------------------------------------
def ipercubo (m):
  def rapp(x): return rapp2(x,cifre=m)
  return map(rapp,xrange(2**m))

for x in ipercubo(4): print x # Output: