Question

我想创建一个Web服务，该服务将使用python，beautifulsoup和nltk提供给定URL中的文本摘要。

但是我在Azure ML Studio中遇到以下错误

AZURE中的原理图：

EnterData模块具有来自Wiki的URL

执行Python脚本具有以下代码

import pandas as pd
import urllib.request as ur
from bs4 import BeautifulSoup
def azureml_main(dataframe1="https://en.wikipedia.org/wiki/Fluid_mechanics", dataframe2 = None):
    wiki = dataframe1[0].to_string()
    page = ur.urlopen(wiki)
    soup = BeautifulSoup(page)
    df= pd.DataFrame([soup.find_all('p')[0].get_text()], columns =['article_text'])
    return dataframe1,

运行此实验会产生以下错误：

    Error 0085: The following error occurred during script evaluation, please view the output log for more information:
    ---------- Start of error message from Python interpreter ----------
    Caught exception while executing function: Traceback (most recent call last):
      File "C:\pyhome\lib\site-packages\pandas\indexes\base.py", line 1876, in get_loc
        return self._engine.get_loc(key)
        File "pandas\index.pyx", line 137, in pandas.index.IndexEngine.get_loc (pandas\index.c:4027)
      File "pandas\index.pyx", line 157, in pandas.index.IndexEngine.get_loc (pandas\index.c:3891)
      File "pandas\hashtable.pyx", line 675, in pandas.hashtable.PyObjectHashTable.get_item (pandas\hashtable.c:12408)
      File "pandas\hashtable.pyx", line 683, in pandas.hashtable.PyObjectHashTable.get_item (pandas\hashtable.c:12359)
    KeyError: 0
    During handling of the above exception, another exception occurred:
    Traceback (most recent call last):
      File "C:\server\invokepy.py", line 199, in batch
        odfs = mod.azureml_main(*idfs)
      File "C:\temp\84d7e9fbcfe54596a2e7de022b4d236c.py", line 23, in azureml_main
        wiki = dataframe1[0][0].to_string()
      File "C:\pyhome\lib\site-packages\pandas\core\frame.py", line 1992, in __getitem__
        return self._getitem_column(key)
  File "C:\pyhome\lib\site-packages\pandas\core\frame.py", line 1999, in _getitem_column
    return self._get_item_cache(key)
  File "C:\pyhome\lib\site-packages\pandas\core\generic.py", line 1345, in _get_item_cache
    values = self._data.get(item)
  File "C:\pyhome\lib\site-packages\pandas\core\internals.py", line 3225, in get
    loc = self.items.get_loc(item)
  File "C:\pyhome\lib\site-packages\pandas\indexes\base.py", line 1878, in get_loc
    return self._engine.get_loc(self._maybe_cast_indexer(key))
  File "pandas\index.pyx", line 137, in pandas.index.IndexEngine.get_loc (pandas\index.c:4027)
  File "pandas\index.pyx", line 157, in pandas.index.IndexEngine.get_loc (pandas\index.c:3891)
  File "pandas\hashtable.pyx", line 675, in pandas.hashtable.PyObjectHashTable.get_item (pandas\hashtable.c:12408)
  File "pandas\hashtable.pyx", line 683, in pandas.hashtable.PyObjectHashTable.get_item (pandas\hashtable.c:12359)
KeyError: 0
Process returned with non-zero exit code 1

---------- End of error message from Python  interpreter  ----------
Start time: UTC 11/11/2018 15:34:21
End time: UTC 11/11/2018 15:34:30

我正在使用Anaconda 4.0 / Python 3.5运行此代码段。
当我将URL分配给变量wiki时，代码将在本地计算机上成功运行
我不确定为什么无法从输入dataframe1中获取值。
输入数据框没有标题，因此dataframe1 [0]应该直接获取URL。

谢谢您的帮助。

Answer 1

您的dataframe1看起来像这样

dataframe1 = {'Col1' : ['https://en.wikipedia.org/wiki/Finite_element_method']}

键不是索引（int），而是键'Col1'，可以用

进行修复

wiki = dataframe1['Col1'].to_string(index=0)

但它会引发另一个错误，如果过长，则会修剪网址

https://en.wikipedia.org/wiki/Finite_element....

所以最好使用

wiki = dataframe1['Col1'][0]

另一个错误是

return dataframe1,

应该是

return df,

固定代码

import pandas as pd
import urllib.request as ur
from bs4 import BeautifulSoup
def azureml_main(dataframe1="https://en.wikipedia.org/wiki/Fluid_mechanics", dataframe2 = None):
    wiki = dataframe1['Col1'][0]
    page = ur.urlopen(wiki)
    soup = BeautifulSoup(page)
    df= pd.DataFrame([soup.find_all('p')[0].get_text()], columns=['article_text'])
    return df,

在Azure ML Studio中执行Python脚本

1 个答案: