Question

我想修改下面的脚本，以便它从脚本生成的随机数量的句子中创建段落。换句话说，在添加换行符之前连接一个随机数（如1-5）句子。

脚本工作正常，但输出是由换行符分隔的短句。我想把一些句子收集成段落。

有关最佳做法的任何想法？感谢。

"""
    from:  http://code.activestate.com/recipes/194364-the-markov-chain-algorithm/?in=lang-python
"""

import random;
import sys;

stopword = "\n" # Since we split on whitespace, this can never be a word
stopsentence = (".", "!", "?",) # Cause a "new sentence" if found at the end of a word
sentencesep  = "\n" #String used to seperate sentences


# GENERATE TABLE
w1 = stopword
w2 = stopword
table = {}

for line in sys.stdin:
    for word in line.split():
        if word[-1] in stopsentence:
            table.setdefault( (w1, w2), [] ).append(word[0:-1])
            w1, w2 = w2, word[0:-1]
            word = word[-1]
        table.setdefault( (w1, w2), [] ).append(word)
        w1, w2 = w2, word
# Mark the end of the file
table.setdefault( (w1, w2), [] ).append(stopword)

# GENERATE SENTENCE OUTPUT
maxsentences  = 20

w1 = stopword
w2 = stopword
sentencecount = 0
sentence = []

while sentencecount < maxsentences:
    newword = random.choice(table[(w1, w2)])
    if newword == stopword: sys.exit()
    if newword in stopsentence:
        print ("%s%s%s" % (" ".join(sentence), newword, sentencesep))
        sentence = []
        sentencecount += 1
    else:
        sentence.append(newword)
    w1, w2 = w2, newword

编辑01：

好的，我拼凑了一个简单的＆＃34;段包装，＆＃34;这很好地将句子收集到段落中，但它与句子生成器的输出相混淆 - 我对第一个单词的重复性过高，例如，其他问题。

但前提是声音;我只需要弄清楚为什么句子循环的功能受到段落循环的添加的影响。请告知您是否可以看到问题：

###
#    usage: $ python markov_sentences.py < input.txt > output.txt
#    from:  http://code.activestate.com/recipes/194364-the-markov-chain-algorithm/?in=lang-python
###

import random;
import sys;

stopword = "\n" # Since we split on whitespace, this can never be a word
stopsentence = (".", "!", "?",) # Cause a "new sentence" if found at the end of a word
paragraphsep  = "\n\n" #String used to seperate sentences


# GENERATE TABLE
w1 = stopword
w2 = stopword
table = {}

for line in sys.stdin:
    for word in line.split():
        if word[-1] in stopsentence:
            table.setdefault( (w1, w2), [] ).append(word[0:-1])
            w1, w2 = w2, word[0:-1]
            word = word[-1]
        table.setdefault( (w1, w2), [] ).append(word)
        w1, w2 = w2, word
# Mark the end of the file
table.setdefault( (w1, w2), [] ).append(stopword)

# GENERATE PARAGRAPH OUTPUT
maxparagraphs = 10
paragraphs = 0 # reset the outer 'while' loop counter to zero

while paragraphs < maxparagraphs: # start outer loop, until maxparagraphs is reached
    w1 = stopword
    w2 = stopword
    stopsentence = (".", "!", "?",)
    sentence = []
    sentencecount = 0 # reset the inner 'while' loop counter to zero
    maxsentences = random.randrange(1,5) # random sentences per paragraph

    while sentencecount < maxsentences: # start inner loop, until maxsentences is reached
        newword = random.choice(table[(w1, w2)]) # random word from word table
        if newword == stopword: sys.exit()
        elif newword in stopsentence:
            print ("%s%s" % (" ".join(sentence), newword), end=" ")
            sentencecount += 1 # increment the sentence counter
        else:
            sentence.append(newword)
        w1, w2 = w2, newword
    print (paragraphsep) # newline space
    paragraphs = paragraphs + 1 # increment the paragraph counter


# EOF

编辑02：

根据以下答案将sentence = []添加到elif声明中。好的;

        elif newword in stopsentence:
            print ("%s%s" % (" ".join(sentence), newword), end=" ")
            sentence = [] # I have to be here to make the new sentence start as an empty list!!!
            sentencecount += 1 # increment the sentence counter

编辑03：

这是此脚本的最后一次迭代。感谢悲伤帮助整理出来。我希望其他人可以玩得开心，我知道我会的。 ;）

仅供参考：有一个小工件 - 如果您使用此脚本，还有一个额外的段末空间可能需要清理。但是，除此之外，马尔可夫链文本生成的完美实现。

###
#    usage: python markov_sentences.py < input.txt > output.txt
#    from:  http://code.activestate.com/recipes/194364-the-markov-chain-algorithm/?in=lang-python
###

import random;
import sys;

stopword = "\n" # Since we split on whitespace, this can never be a word
stopsentence = (".", "!", "?",) # Cause a "new sentence" if found at the end of a word
sentencesep  = "\n" #String used to seperate sentences


# GENERATE TABLE
w1 = stopword
w2 = stopword
table = {}

for line in sys.stdin:
    for word in line.split():
        if word[-1] in stopsentence:
            table.setdefault( (w1, w2), [] ).append(word[0:-1])
            w1, w2 = w2, word[0:-1]
            word = word[-1]
        table.setdefault( (w1, w2), [] ).append(word)
        w1, w2 = w2, word
# Mark the end of the file
table.setdefault( (w1, w2), [] ).append(stopword)

# GENERATE SENTENCE OUTPUT
maxsentences  = 20

w1 = stopword
w2 = stopword
sentencecount = 0
sentence = []
paragraphsep = "\n"
count = random.randrange(1,5)

while sentencecount < maxsentences:
    newword = random.choice(table[(w1, w2)]) # random word from word table
    if newword == stopword: sys.exit()
    if newword in stopsentence:
        print ("%s%s" % (" ".join(sentence), newword), end=" ")
        sentence = []
        sentencecount += 1 # increment the sentence counter
        count -= 1
        if count == 0:
            count = random.randrange(1,5)
            print (paragraphsep) # newline space
    else:
        sentence.append(newword)
    w1, w2 = w2, newword


# EOF

Answer 1

您需要复制

sentence = []

回到

elif newword in stopsentence:

子句。

所以

while paragraphs < maxparagraphs: # start outer loop, until maxparagraphs is reached
    w1 = stopword
    w2 = stopword
    stopsentence = (".", "!", "?",)
    sentence = []
    sentencecount = 0 # reset the inner 'while' loop counter to zero
    maxsentences = random.randrange(1,5) # random sentences per paragraph

    while sentencecount < maxsentences: # start inner loop, until maxsentences is reached
        newword = random.choice(table[(w1, w2)]) # random word from word table
        if newword == stopword: sys.exit()
        elif newword in stopsentence:
            print ("%s%s" % (" ".join(sentence), newword), end=" ")
            sentence = [] # I have to be here to make the new sentence start as an empty list!!!
            sentencecount += 1 # increment the sentence counter
        else:
            sentence.append(newword)
        w1, w2 = w2, newword
    print (paragraphsep) # newline space
    paragraphs = paragraphs + 1 # increment the paragraph counter

修改

这是一个不使用外循环的解决方案。

"""
    from:  http://code.activestate.com/recipes/194364-the-markov-chain-algorithm/?in=lang-python
"""

import random;
import sys;

stopword = "\n" # Since we split on whitespace, this can never be a word
stopsentence = (".", "!", "?",) # Cause a "new sentence" if found at the end of a word
sentencesep  = "\n" #String used to seperate sentences


# GENERATE TABLE
w1 = stopword
w2 = stopword
table = {}

for line in sys.stdin:
    for word in line.split():
        if word[-1] in stopsentence:
            table.setdefault( (w1, w2), [] ).append(word[0:-1])
            w1, w2 = w2, word[0:-1]
            word = word[-1]
        table.setdefault( (w1, w2), [] ).append(word)
        w1, w2 = w2, word
# Mark the end of the file
table.setdefault( (w1, w2), [] ).append(stopword)

# GENERATE SENTENCE OUTPUT
maxsentences  = 20

w1 = stopword
w2 = stopword
sentencecount = 0
sentence = []
paragraphsep == "\n\n"
count = random.randrange(1,5)

while sentencecount < maxsentences:
    newword = random.choice(table[(w1, w2)])
    if newword == stopword: sys.exit()
    if newword in stopsentence:
        print ("%s%s" % (" ".join(sentence), newword), end=" ")
        sentence = []
        sentencecount += 1
        count -= 1
        if count == 0:
            count = random.randrange(1,5)
            print (paragraphsep)
    else:
        sentence.append(newword)
    w1, w2 = w2, newword

Answer 2

你了解这段代码吗？我打赌你可以找到打印句子的位，并将其改为一起打印几个句子而不返回。您可以在句子位周围添加另一个while循环以获得多个段落。

语法提示：

print 'hello'
print 'there'
hello
there

print 'hello',
print 'there'
hello there

print 'hello',
print 
print 'there'

关键是print语句末尾的逗号会阻止行尾的返回，而空白的print语句会打印一个返回。

如何从马尔可夫链输出创建段落？

2 个答案: