How to register words containing ", (comma)" in the dictionary

[nekomimimaiden257]

en:

Is there a way to register words that contain "," (comma) in the user dictionary?
For example, I want to register the following words.

• 3,3-Dimethylpentane

In case of MeCab, you can register a word including comma by enclosing it in double quotation marks.
In case of Janome, I get "ValueError: too many values to unpack" error as follows.

Traceback (most recent call last):
  File "janome_make_usrdic.py", line 86, in <module>
    user_dict = UserDictionary("janome_sample_dic.csv", "cp932", "ipadic", sysdi
c.connections)
  File "C:\Python27\lib\site-packages\janome\dic.py", line 393, in __init__
    compiledFST, entries = build_method(user_dict, enc)
  File "C:\Python27\lib\site-packages\janome\dic.py", line 405, in buildipadic
    line.split(',')
ValueError: too many values to unpack

As long as it is split by line.split(','), is it not possible to handle words containing commas?

ja（日本語）:

ユーザー辞書に「,（カンマ）」を含む単語を登録する方法はありますか。
例えば、次のような単語を登録したいです。

• 3,3-ジメチルペンタン

MeCab の場合は、 ダブルクォーテーションで括ることで、カンマを含む単語を辞書登録できます。
Janome の場合は、以下のように「ValueError: too many values to unpack」エラーとなってしまいます。

Traceback (most recent call last):
  File "janome_make_usrdic.py", line 86, in <module>
    user_dict = UserDictionary("janome_sample_dic.csv", "cp932", "ipadic", sysdi
c.connections)
  File "C:\Python27\lib\site-packages\janome\dic.py", line 393, in __init__
    compiledFST, entries = build_method(user_dict, enc)
  File "C:\Python27\lib\site-packages\janome\dic.py", line 405, in buildipadic
    line.split(',')
ValueError: too many values to unpack

line.split(',') で分割している以上、カンマを含む単語は扱えない仕様でしょうか。

Environment:
Janome 0.3.10
python 2.7.18 32bit
Windows 8.1 64bit