Python3 练习题2

创建一些词汇列表，比如，冠词（“the”，“a”）、主题（“cat”，“dog”，“man”，“woman”）、动词（“sang”，“run”，“jumped”）、状语（“loudly”，“quietly”，“well”，“badly”）。之后循环5次，每次迭代中，使用random.choice（）函数选择冠词主题动词状语，使用random.randint（）选择结构：冠词+主题+动词+状语；冠词+主题+动词。 用户可在命令行上加上参数数字（1-10之间时），程序输出相应的行数，若没有加命令行参数，默认输出5行。

运行实例：

the man ran

a man jumped

a cat jumped badly

a man sang

the woman sang

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D:\python_work\test.py 8

the woman sang loudly

a woman jumped quietly

a woman sang

a cat sang

a man jumped

a woman sang

the man jumped

a man sang quietly

 

import random
import sys
time=5
if len(sys.argv)>1:
   try:
      if 1<=int(sys.argv[1])<=10:
         time=int(sys.argv[1])
   except ValueError as err:
      print(err)
      time=5
guanci=["the","a"]
zhuti=["cat","dog","man","woman"]
dongci=["sang","ran","jumped"]
zhuangyu=["loudly","quietly","well","badly"]
line=""          
for i in range(time):
   gc=random.choice(guanci)
   zt=random.choice(zhuti)
   dc=random.choice(dongci)
   zy=random.choice(zhuangyu)
   if random.randint(0,1):
      line=gc+" "+zt+" "+dc+" "+zy
   else:
      line=gc+" "+zt+" "+dc

   print(line)