如何解决机械化模块中的导入错误

Question

我正在尝试学习机械化模块，但在做基本的事情时得到这个导入错误

我收到了这个错误

@api.multi
def handle_detail(self, order_line):
    dict_item = {}
    for line in order_line:
        for key in 
        quantity_extra = int(line.quantity_extra)
        if quantity_extra not in dict_item.keys():
                dict_item[quantity_extra].append(line.lng)
            else:
                dict_item[quantity_extra] = [line.lng]
result = []
total = 0.0
for item in dict_item.keys():
    lst_ing = dict_item[item]
    if len(lst_ing) > 1:
        result.append(
            '( %s ) x %s' % (' + '.join([str(lng) for lng in lst_ing]),
                             str(item)))
        total += (sum(lst_ing) * item)
    else:
        result.append('%s x %s' % (str(lst_ing[0]), str(item)))
        total += (lst_ing[0] * item)
return result, total

这样做

Traceback (most recent call last):  
  File "C:/Users/HUNTER/PycharmProjects/Encryption/erp.py", line 2, in <module>
    import mechanize  
  File "C:\Users\HUNTER\AppData\Local\Programs\Python\Python35-32\lib\site-packages\mechanize\__init__.py", line 119, in <module>
    from _version import __version__  
ImportError: No module named '_version'