a=range(5,13,2)
print a

a=range(5,13)
print a

a=range(11)
print a
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a=xrange(5,13,2)
print a

for x in a: print x,
---------------------------------------
if 3<5<9: print 'o.k.'

a=b=c=4
for x in [a,b,c]: print x,
print
---------------------------------------
def f(x): return 2*x+1

def g(x):
  if (x>0): return x
  else: return -x

for x in xrange(0,10): print f(x),
print

for x in xrange(-5,5): print g(x),
print
---------------------------------------
import math

def raggio (x,y):
  return math.sqrt(x**2+y**2)

print raggio(2,3)
print math.sqrt(13)
---------------------------------------
def sommax (f,g,x): return f(x)+g(x)

def compx (f,g,x): return f(g(x))

def u(x): return x**2

def v(x): return 4*x+1

print sommax(u,v,5)

print compx(u,v,5)
---------------------------------------
def somma (f,g):
  def s(x): return f(x)+g(x)
  return s

def comp (f,g):
  def c(x): return f(g(x))
  return c

def u(x): return x**2

def v(x): return 4*x+1

print somma(u,v)(5)

print comp(u,v)(5)
---------------------------------------
print 'Carlo era bravissimo.'

print "Carlo e' bravissimo."

print '''Stringhe a piu' righe si
usano talvolta nei commenti.'''
---------------------------------------
def somma (*a):
  s=0
  for x in a: s+=x
  return s

print somma(1,2,3,10,5)
---------------------------------------
def horner (alfa,*a):
  alfa=float(alfa); b=0
  for t in a: b=b*alfa+t
  return b

print horner(10,6,2,0,8)
---------------------------------------
latino = {'casa': 'domus',
  'villaggio': 'pagus',
  'nave':'navis', 'campo':'ager'}
voci=sorted(latino.keys())
for x in voci:
  print '%-9s = %s' %(x,latino[x])
---------------------------------------
a=5; b=3; a,b=b,a; print [a,b]