# range(start, stop[, step])
for i in range(5):
print i;
print '==============';
for i in range(0,5,2):
print i;
print 20 * '*';
for i in [0, 1, 2]:
print i;
# one line loop~ cool~
arr = [-num for num in range(20) if num % 3 == 1];
print arr;
print 10 * '*', 'for end', 10 * '*';
i = 0;
while i < 5:
print i;
i+=1;
print 20 * '*';
i = 0;
while True:
if i >= 5:
break;
else:
i+=1;
if i % 2 == 1:
continue;
print i;