def leggifile (nome):
  f=file(nome,'r'); testo=f.read()
  f.close(); return testo
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a=leggifile('diffusion.f')
righe=a.split('\n')
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def scrivifile (nome,testo):
  f=file(nome,'w')
  f.write(testo); f.close()
---------------------------------------
def scrivifilev (nome,testi,sep='\n'):
  f=file(nome,'w')
  for x in testi: f.write(x+sep)
  f.close()
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f=file('prova','w')
f.write('Maria Tebaldi\n')
f.write('Roberto Magari\n')
f.write('Erica Rossi\n')
f.close()
---------------------------------------
def aggiungifile (nome,testo):
  f=file(nome,'a')
  f.write(testo); f.close()
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print os.path.split('/alfa/beta/gamma')
# ('/alfa/beta', 'gamma')

print os.path.split('/alfa/beta/gamma/')
# ('/alfa/beta/gamma', '')

print os.path.split('/')
# ('/', '')
print os.path.split('//')
# ('//', '') - benche' '//' non sia correttamente formato.

print os.path.split('/stelle')
# ('/', 'stelle')

print os.path.split('stelle/sirio')
# ('stelle', 'sirio')
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v=sys.argv
print v[0]

a=leggifile(v[1])
print a
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v=sys.argv
x=int(v[1]); y=int(v[2])
print x+y
---------------------------------------
parola=sys.argv[1]

def cesare (a):
  # Come a pagina 8
  ...

print cesare(parola)
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prova.py FORTISSIMISUNTBELGAE