f = file('test','rb')
fout = file('test.out','wb')
#fout = file('test.out','w+b')
for i in range(10):
a = f.read(1)
fout.write(a)
f.close()
f = fout f.seek(4)
print f.read(4)
f = file('test','rb')
fout = file('test.out','wb')
#fout = file('test.out','w+b')
for i in range(10):
a = f.read(1)
fout.write(a)
f.close()
f = fout f.seek(4)
print f.read(4)