error: cannot convert argument to integer in Python

Question

我正在处理来自 Kaggle 的数据集，我想提取带有名称的 Pandas 列的标题。我使用以下代码：

    def extract_patt(patt, linea):
        matchObj = re.match(patt, linea)
        result = ""
        if matchObj:
            return matchObj.group(1).lower()
        else:
            return ""

    def extract_title(linea):
        return extract_patt('^.+,\s(.+)\..+', linea)

    titles = dataframe1["Name"].apply(extract_title)

    title_mapping = {"": 0, "mr": 1, "miss": 2, "mrs": 3, "master": 4, "dr": 5, "rev": 6, "major": 7, "col": 7, "mlle": 8, "mme": 8, "don": 9, "lady": 10, "countess": 10, "jonkheer": 10, "sir": 9, "capt": 7, "ms": 2}

    for k in title_mapping:
        titles[titles == k] = title_mapping[k]

    dataframe1["Title"] = titles

但是，当我运行 Azure 机器学习平台上的这段代码作为 Python 代码时，出现以下错误：

Error 0085: The following error occurred during script evaluation, please view the output log for more information:
 ---------- Start of error message from Python interpreter ----------
 data:text/plain,Caught exception while executing function: Traceback (most recent call last):
   File "C:\server\invokepy.py", line 176, in batch
     rutils.RUtils.DataFrameToRFile(outlist[i], outfiles[i])
   File "C:\server\RReader\rutils.py", line 28, in DataFrameToRFile
     rwriter.write_attribute_list(attributes)
   File "C:\server\RReader\rwriter.py", line 59, in write_attribute_list
     self.write_object(value);
   File "C:\server\RReader\rwriter.py", line 121, in write_object
     write_function(flags, value.values())
   File "C:\server\RReader\rwriter.py", line 104, in write_objects
     self.write_object(value)
   File "C:\server\RReader\rwriter.py", line 121, in write_object
     write_function(flags, value.values())
   File "C:\server\RReader\rwriter.py", line 71, in write_integers
     self.write_integer(value)
   File "C:\server\RReader\rwriter.py", line 147, in write_integer
     self.writer.WriteInt32(value)
   File "C:\server\RReader\BinaryIO\binarywriter.py", line 23, in WriteInt32
     self.WriteData(self.Int32Format, data)
   File "C:\server\RReader\BinaryIO\binarywriter.py", line 14, in WriteData
     self.stream.write(pack(format, data))
 error: cannot convert argument to integer

 ---------- End of error message from Python  interpreter  ----------
Start time: UTC 09/29/2015 07:47:02
End time: UTC 09/29/2015 07:47:13

问题可能出在映射代码中，因为如果我删除它，我将有一列包含标题而不是整数。

编辑： 我也尝试了以下而不是 for 循环来映射，但我有同样的错误：

dataframe1["Title"].replace(title_mapping, inplace=True)

Answer 1

根据我的经验，问题代码是代码 titles[titles == k] = title_mapping[k] 中的 titles == k。表达式titles == k的值类型是boolean类型。

在Python中，boolean类型是整型值类型的一种。 False值等于0，所有非零整数都是True值。

但是map'titles'的key的value类型应该是string类型所以报错信息是"cannot convert argument to integer".

此致。

Answer 2

我运行遇到了同样的问题，同样是泰坦尼克号数据集。我首先使用 Azure 的内置 'Project Columns' 删除了机票和机舱号列，然后将文件推送到 Python 脚本中，现在它可以工作了。

idk 那些专栏中有什么困扰它？有人发布了一条消息，其中第一行中的空值可能是一个问题，MS 表示即将修复错误。

error: cannot convert argument to integer in Python

error: cannot convert argument to integer in Python

python

azure

kaggle