Question

我正在做点什么。这是代码需要做的事情

阅读文件
将每一行放入数组中的项目
将阵列随机播放到尽可能多的shuffle中。将在下面解释
创建一个新文件来存储随机字样

第3号解释： file.txt包含以下内容

this
is
a
test

需要改变任何可能的结果。喜欢这个

this is a test
this a is test
this test is a
this test a is

依此类推。有16种可能的结果，所以我不会用它来解决我的问题。

我在Python 2.7中使用以下代码

file = raw_input('Enter File Name: ')
with open(file, 'r+') as f:
    array = list(f)
    print array

输出就是这个，完全没问题（'\ n'除外）：

['this\n', 'is\n', 'a\n', 'test']

现在，每当我使用shuffle（）时，我都在使用此代码

from random import shuffle
file = raw_input('Enter File Name: ')
with open(file, 'r+') as f:
    array = list(f)
    new = shuffle(array)
    print new

输出是这样的：

None

我知道为了写，我需要使用w +并执行f.write（new）然后f.close（），它清除我的file.txt并将其保存为空白

我该怎么做呢？

Answer 1

您可以使用itertools：

>>> import itertools
>>> words = ['this', 'is', 'a', 'test']
>>> for p in itertools.permutations(words): print ' '.join(p)

this is a test
this is test a
this a is test
this a test is
this test is a
this test a is
is this a test
is this test a
is a this test
is a test this
is test this a
is test a this
a this is test
a this test is
a is this test
a is test this
a test this is
a test is this
test this is a
test this a is
test is this a
test is a this
test a this is
test a is this

显然，可以通过写入文件来替换打印件。

如果输入文件太大，您可以用循环替换循环并使用整个文件读写：

import itertools

with open('test.txt','r') as infile, open('shuffles.txt','w') as outfile:
    words = infile.read().strip().split('\n')
    shuffles = itertools.permutations(words)
    output = '\n'.join(' '.join(shuffle) for shuffle in shuffles)
    outfile.write(output)

如何读取文件，将内容放入数组，随机播放数组，然后将混洗数组写入python 2.7中的文件

1 个答案: