我正在尝试构建一个马尔可夫生成器,它将单词链的任意长度作为编程练习,但是我发现了一个我似乎无法完全修复的错误。当我运行markov函数时,列表索引超出范围。在
我觉得我忽略了一些显而易见的东西,但我不确定是什么。回溯显示错误在第41行,带有words[-1] = nextWords[random.randint(0, len(nextWords)-1)]
。在
完整代码在下面,如果缩进是混乱的对不起。在
#! /usr/bin/python
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# and open the template in the editor.
import random
class Markov(object):
def __init__(self, open_file):
self.cache = {}
self.open_file = open_file
open_file.seek(0)
self.wordlist = open_file.read().split()
def get_random_list(self, length):
i = random.randint(0, len(self.wordlist) - (length - 1))
result = self.wordlist[i:i + length]
return result
def find_next_word(self, words):
candidates = []
for i in range(len(self.wordlist) - len(words)):
if self.wordlist[i:i + len(words)] == words and self.wordlist[i+len(words)+1] not in candidates:
candidates.append(self.wordlist[i+len(words)+1])
return candidates
def markov(self, length=20, chainlength=2):
gibberish = []
words = self.get_random_list(chainlength)
for i in range(len(words)-1):
gibberish.append(words[i])
while len(gibberish) < length:
#find candidate for next word
nextWords = self.find_next_word(words)
gibberish.append(words[-1])
for i in range(len(words)):
try:
words[i] = words[i+1]
except:
pass
words[-1] = nextWords[random.randint(0, len(nextWords)-1)]
return " ".join(gibberish)
如果
words
为空,则会发生这种情况。尝试访问空数组中的words[-1]
与words[0]
一样无效。添加一个检查以查看len(words) == 0
。相同的逻辑适用于nextWords
,在这段代码中,它看起来也可能是空的。在相关问题 更多 >
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