打印导致 LangDetectException 的行答案

【问题标题】：Print row that causes LangDetectException打印导致 LangDetectException 的行
【发布时间】：2020-08-31 14:42:22
【问题描述】：

我无法进行语言检测。下面的代码引发异常错误。

from langdetect import detect
for row in df['Comments']:
    text = str(row)
    language_code = detect(text)
    sentence = [all_languages_codes.get(language_code)]
    df['Language']=sentence[0]

错误信息：

    148         ngrams = self._extract_ngrams()
    149         if not ngrams:
--> 150             raise LangDetectException(ErrorCode.CantDetectError, 'No features in text.')
    151 
    152         self.langprob = [0.0] * len(self.langlist)

LangDetectException: No features in text.

如何打印出导致LangDetectException 的行？

【问题讨论】：

标签： python-3.x pandas nlp language-detection

【解决方案1】：

您的 Contents 字符串看起来是空的：

detect("")
LangDetectException: No features in text.

您可以启动调试器或交互式 shell 来确定，将其包装在 try/except 块中并在引发异常时启动调试器：

from langdetect import detect
for row in df['Comments']:
    try:
        text = str(row)
        language_code = detect(text)
        sentence = [all_languages_codes.get(language_code)]
        df['Language']=sentence[0]
    except Exception:
        import ipdb; ipdb.set_trace()

【讨论】：