NLTK和下载的Chaquopy问题 [英] Chaquopy problems with nltk and download

问题描述

根据 Chaquopy无法下载资源 i我不确定问题是否得到解决.

According to Chaquopy Not able to download Resource i'm not sure if the problem got solved.

这是nltk上下文中的问题. 包含nltk.download行之一后:

So here is question in the nltk context. After including one of the nltk.download line:

nltk.download('popular')
or
nltk.download('punkt')
or
nltk.download('all')

我得到了这个堆栈跟踪:

I get this stack trace:

2020-08-26 13:33:45.742 19765-19765/com.pro.useyournotes E/ExceptionTag: com.chaquo.python.PyException: BadZipFile: File is not a zip file
    com.chaquo.python.PyException: BadZipFile: File is not a zip file
        at <python>.zipfile._RealGetContents(zipfile.py:1335)
        at <python>.zipfile.__init__(zipfile.py:1268)
        at <python>.nltk.data.__init__(data.py:936)
        at <python>.nltk.compat._decorator(compat.py:41)
        at <python>.nltk.data.__init__(data.py:396)
        at <python>.nltk.compat._decorator(compat.py:41)
        at <python>.nltk.data.find(data.py:544)
        at <python>.nltk.data.find(data.py:557)
        at <python>.nltk.tag.perceptron.__init__(perceptron.py:168)
        at <python>.nltk.tag._get_tagger(__init__.py:106)
        at <python>.nltk.tag.pos_tag_sents(__init__.py:178)
        at <python>.uyn_pre_processing.pre_processing(uyn_pre_processing.py:88)
        at <python>.uyn_analysis_workflow.analyse_new_data(uyn_analysis_workflow.py:62)
        at <python>.uyn_main.main(uyn_main.py:266)
        at <python>.chaquopy_java.call(chaquopy_java.pyx:285)
        at <python>.chaquopy_java.Java_com_chaquo_python_PyObject_callAttrThrows(chaquopy_java.pyx:257)
        at com.chaquo.python.PyObject.callAttrThrows(Native Method)
        at com.chaquo.python.PyObject.callAttr(PyObject.java:209)
        at com.pro.useyournotes.MainActivity.getPythonHello(MainActivity.kt:70)
        at com.pro.useyournotes.MainActivity.onCreate(MainActivity.kt:59)
        at android.app.Activity.performCreate(Activity.java:7136)
        at android.app.Activity.performCreate(Activity.java:7127)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
        at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
        at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
        at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
        at android.os.Handler.dispatchMessage(Handler.java:106)
        at android.os.Looper.loop(Looper.java:193)
        at android.app.ActivityThread.main(ActivityThread.java:6669)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

发生此错误的代码是:

    tagged_words=nltk.pos_tag_sents(tokenized_sentences)

at <python>.uyn_pre_processing.pre_processing(uyn_pre_processing.py:88)

我也不知道nltk文件放在哪里.早些时候，当我只是在python端编程时，我只记得使用 import nltk 命令.希望一些人已经找到了使用nltk的解决方案.

I also don't know where the nltk-files are placed. Earlier when i just programmed on the python side i onlyremember using the import nltk command. Hopefully some already found a solution for using nltk.

推荐答案

我能够在模拟器上重现类似内容.就我而言，根本原因是下载失败并显示DECRYPTION_FAILED_OR_BAD_RECORD_MAC错误，留下了不完整的ZIP文件.

I was able to reproduce something similar on the emulator. In my case the root cause was that the download failed with a DECRYPTION_FAILED_OR_BAD_RECORD_MAC error, leaving behind an incomplete ZIP file.

这似乎是模拟器的一个低级问题，它不是特定于Python的.如果可以确认您遇到相同的问题(请在nltk.download 中查看DECRYPTION_FAILED_OR_BAD_RECORD_MAC) logcat 输出)，然后请在Android问题跟踪器的此处上加星号，帮助鼓励他们修复它.

This appears to be a low-level problem with the emulator which isn't specific to Python. If you can confirm you have the same problem (by seeing DECRYPTION_FAILED_OR_BAD_RECORD_MAC in the nltk.download logcat output), then please add a star on the Android issue tracker here, to help encourage them to fix it.

您可以通过以下方法解决此问题:循环重复调用nltk.download，直到它返回true.为了节省时间，您可能应该只下载所需的数据文件.您可以通过简单地调用相应的函数并查看错误消息来找出它们是什么，例如:

You can work around this by calling nltk.download repeatedly in a loop until it returns true. To save time, you should probably only download the data files you need. You can find out what these are by simply calling the corresponding function and looking at the error message, e.g.:

>>> nltk.pos_tag_sents([["hello", "world"]])
...
LookupError: 
**********************************************************************
  Resource [93maveraged_perceptron_tagger[0m not found.
  Please use the NLTK Downloader to obtain the resource:
 
  [31m>>> import nltk
  >>> nltk.download('averaged_perceptron_tagger')

然后，您可以将其添加到您的代码中:

Then you can add this to your code:

while not nltk.download('averaged_perceptron_tagger'):
    print("Retrying download")

几次迭代后成功完成，然后我就能够成功调用nltk.pos_tag_sents.

This succeeded after a few iterations, and I was then able to call nltk.pos_tag_sents successfully.

这篇关于NLTK和下载的Chaquopy问题的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！