break和continue的使用

# print all numbers from a to b
a = 5
b = 10

while True:
    if a >= b:
        print a 
        break
    else:
        print a 
        a += 1
print "Test is over."

# print all numbers from a to b
a = 5
b = 10

while a <= b:
    print a
    a += 1
    
print "Test is over."
    
    

a = 5
b = 10

for a in range(a, b + 1, 1):
    print a
    a += 1
    
print "Test is over."
    
    

# print all numbers from a to b
a = 5
b = range(5, 11, 1)

for a in b:
    print a
    a += 1
    
print "Test is over."