orange3：ImportError：名前 '_variable'をインポートできません

Question

私はMacでOrange3を使用しようとしていますが、このエラーはImportError: cannot import name '_variable'です。

これは私の設定です：orange_playground/venv/lib/python3.4/site-packages/Orange/data/variable.pyからのコードの

Python 3.4.2 (default, Oct 8 2014, 19:29:52) 
[GCC 4.2.1 Compatible Apple LLVM 6.0 (clang-600.0.51)] on darwin 
Type "help", "copyright", "credits" or "license" for more information. 
>>> import Orange 
Traceback (most recent call last): 
    File "<stdin>", line 1, in <module> 
    File "orange_playground/venv/lib/python3.4/site-packages/Orange/__init__.py", line 11, in <module> 
    from .misc.lazy_module import _LazyModule 
    File "orange_playground/venv/lib/python3.4/site-packages/Orange/misc/__init__.py", line 3, in <module> 
    from .distmatrix import DistMatrix 
    File "orange_playground/venv/lib/python3.4/site-packages/Orange/misc/distmatrix.py", line 3, in <module> 
    from Orange.data import Table, StringVariable, Domain 
    File "orange_playground/venv/lib/python3.4/site-packages/Orange/data/__init__.py", line 4, in <module> 
    from .variable import * 
    File "orange_playground/venv/lib/python3.4/site-packages/Orange/data/variable.py", line 11, in <module> 
    from Orange.data import _variable 
ImportError: cannot import name '_variable' 

ファーストライン：

import collections 
import re 

from datetime import datetime, timedelta, timezone 
from numbers import Number, Real, Integral 
from math import isnan, floor 
from pickle import PickleError 

import numpy as np 

from Orange.data import _variable 
from Orange.util import Registry, color_to_hex, hex_to_color 

__all__ = ["Unknown", "MISSING_VALUES", "make_variable", "is_discrete_values", 
      "Value", "Variable", "ContinuousVariable", "DiscreteVariable", 
      "StringVariable", "TimeVariable"] 


# For storing unknowns 
Unknown = ValueUnknown = float("nan") 
# For checking for unknowns 
MISSING_VALUES = {np.nan, "?", "nan", ".", "", "NA", "~", None} 

... 

任意のアイデア何をすべきかを次のように

$ cd orange_playground 
$ virtualenv -p python3 venv 
$ pip install orange3 
$ source venv/bin/activate 
$ python 

出力はありますか？

Answer 1

Installing Orange3 from source@MartijnPietersがおすすめです！ありがとう。