# 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;