# 18.py

import os, sys, time

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')

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

def leggifile (nome):
  f=open(nome,'r')
  # Oppure f=file(nome,'r').
  testo=f.read()
  f.close(); return testo

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

a=leggifile('diffus.f')
righe=a.split('\n')

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

def scrivifile (nome,testo):
  f=open(nome,'w')
  f.write(testo); f.close()

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

def scrivifilev (nome,testi,sep='\n'):
  f=open(nome,'w')
  for x in testi: f.write(x+sep)
  f.close()

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

f=open('prova','w')
f.write('Maria Tebaldi\n')
f.write('Roberto Magari\n')
f.write('Erica Rossi\n')
f.close()

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

def aggiungifile (nome,testo):
  f=open(nome,'a')
  f.write(testo); f.close()

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

t=time.localtime(); print t
# (2006, 2, 8, 19, 48, 23, 2, 39, 0)
# anno, mese, giorno, ora, minuti, secondi,
# giorno della settimana (0 = lunedi'),
# giorno nell'anno, 1 se tempo estivo.

print time.strftime('%d %b %Y, %H:%M',t)
# 08 Feb 2006, 19:54

print time.ctime()
# Wed Feb  8 19:50:20 2006

print time.time() # Meglio time.clock().
# 1139424643.05
for i in range(1000000): pass
print time.time() # Meglio time.clock().
# 139424643.23