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Asked:2020-11-09 19:40:55 +0000 UTC2020-11-09 19:40:55 +0000 UTC

不输出指定的行数

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我正在Python学习，这样的练习有一个小问题（我正在根据 Summerfield 的书学习 - “Programming in Python3. A detail guide”）

练习本身被缩短了，但任务可以理解 所以从 4 个已经填写的列表（文章、名词、动词、副词）中使用 5 个循环生成句子random.choice()。这样一个收到的诗句有5行，每一行都有这样随机选择的句子。

我做了什么

-创建4个列表，变量line=5（行数）

- 暂时执行while一个有这种条件的循环line!=5

-在循环本身中，已经有内部循环用于迭代每个列表的值，在帮助下选择其中一个并将其random.choice()显示在屏幕上。

问题如下：

我在Ubuntu终端中工作并使用我启动我的迷你应用程序，但它没有启动，但它只是换行到终端的下一行（好像命令已执行 - 见图）

在此处输入图像描述

Код:
#!/usr/bin/env python3

import random
import sys

listarticles=["the","a","for","an","this","that","those"]
listsush=["cat","dog","man","woman","duck","girl","boy"]
listglag=["sing","walk","run","drink","eat","sleep","cry"]
listnarech=["loudly","fastly","well","badly","quietly","ugly","blackly"]

line = 5
while line!=5:
     for ls1 in listarticles:
        ls1 = random.choice(listarticles)
        print(ls1)
     for ls2 in listsush:
        ls2 = random.choice(listsush)
        print(ls2)
     for ls3 in listglag:   
        ls3 = random.choice(listglag)
        print(ls3)
     for ls4 in listnarech:
        ls4 = random.choice(listnarech)
        print(ls4)
     line+=1
python

3 个回答

  1. 您可以通过使用循环制作 5 句话来稍微简化代码：

    #!/usr/bin/env python3
import random

articles = ["the", "a", "for", "an", "this", "that", "those"]
nouns = ["cat", "dog", "man", "woman", "duck", "girl", "boy"]
verbs = ["sing", "walk", "run", "drink", "eat", "sleep", "cry"]
adjectives = ["loudly", "fastly", "well", "badly", "quietly", "ugly", "blackly"]

parts = articles, nouns, verbs, adjectives 
for _ in range(5):
    print(*map(random.choice, parts))

    map为代表句子一部分的每个列表调用random.choice一个函数：

    print(*[random.choice(part) for part in parts])
    • 3
  2. Best Answer

    如果我正确理解了任务，那么您需要这样的东西

     #!/usr/bin/env python3
import random
import sys

listarticles = ["the","a","for","an","this","that","those"]
listsush = ["cat","dog","man","woman","duck","girl","boy"]
listglag = ["sing","walk","run","drink","eat","sleep","cry"]
listnarech = ["loudly","fastly","well","badly","quietly","ugly","blackly"]

line = 0
while line != 5:
    ls1 = random.choice(listarticles)
    print(ls1, end=" ")
    ls2 = random.choice(listsush)
    print(ls2, end=" ")
    ls3 = random.choice(listglag)
    print(ls3, end=" ")
    ls4 = random.choice(listnarech)
    print(ls4, end=" ")
    print()
    line += 1
    • 2 
  3. # -*- coding: utf-8 -*-
from __future__ import print_function
import random
import sys

listarticles=["the","a","for","an","this","that","those"]
listsush=["cat","dog","man","woman","duck","girl","boy"]
listglag=["sing","walk","run","drink","eat","sleep","cry"]
listnarech=["loudly","fastly","well","badly","quietly","ugly","blackly"]

line = 0
while line!=5:
    ls1 = random.choice(listarticles)
    print(ls1, end=" ")
    ls2 = random.choice(listsush)
    print(ls2, end=" ")
    ls3 = random.choice(listglag)
    print(ls3, end=" ")
    ls4 = random.choice(listnarech)
    print(ls4, end=" ")
    print()
    line+=1
    • 1

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