笨办法29IF语句

 1 people = 20
 2 cats = 30 
 3 dogs = 15
 4 
 5 if people < cats:
 6     print "Too many cats! The world is doomed!"
 7     
 8 if people > cats:
 9     print "Not many cats! The world is saved!"
10     
11 if people < dogs:
12     print "The world is drooled on!"
13     
14 if people > dogs:
15     print "The world is dry!"
16     
17 dogs += 5
18 
19 if people >= dogs:
20     print "People are greater than or equal to dogs."
21     
22 if people <=dogs:
23     print "People are less than or equal to dogs."
24     
25 if people == dogs:
26     print "people are dogs."

dogs += 5 即 dogs = dogs + 5

此时dogs=20，同时满足三个条件，输出三句