import os

os.system('dir > catalogo')
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v=[1,2,5,8,7]

for i in xrange(5): print v[i],
print

for x in v: print x,
print

a=[1,2,3]; b=[4,5,6]
v=[a,b]

print v

for x in v: print x

print len(v)
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if 'a' in 'nave': print "Si'."

if 7 in [3,5,1,7,10]: print "Si'."

if 2 in [3,5,1,7,10]: print "Si'."
else: print "No."

a=[1,2,3,4]; b=[5,6,7,8,9]
print a+b

a='Mario'; b='Rossi'
print a+' '+b

a=[1,2,3]*4
print a

a='==.=='*3
print a

a=[10,11,12,13,14,15,16,17,18,19,20]
for i in xrange(0,11,3): print a[i],
print

a='01234567'
print a[2:5]

a=[3,5,3,1,0,1,2,1]
b=sorted(a)
print b

a=[1,2,3,4,5]
c=reversed(a)
print c

d=list(reversed(a))
print d

a='MARIO'
print list(a)