Μετατρέψτε την for σε ισοδύναμη while
for i in range(12,10,-1):
print i
i=12
while i>10:
i=i-1
while i<10:
i=i+1
for i in range(10,5,-5):
i=10
while i>5:
i=i-5
i=i+5
while i<5:
for i in range(12,13):
while i<13:
while i>13:
i=13
while i<12:
for i in range(10):
i=0
while i<0:
for i in range(20,10,-5):
i=20
for i in range(20,40,-10):
while i>40:
i=i-10
while i<40:
while i<20:
i=i+40
i=i+10