在调用heroku时运行"otree FileNotFoundError run“

Question

所以我收到了一个FileNotFoundError: [Errno 2] No such file or directory error，老实说，我不知道该怎么做，因为文件肯定在那里。当我尝试在heroku run "otree resetdb"命令后使用heroku和git部署oTree实验时出现错误。操作系统为Windows 10。

完整错误消息：

Running otree resetdb on ⬢ otreeexperimentna... up, run.5607 (Free)
Traceback (most recent call last):
  File "/app/.heroku/python/lib/python3.7/site-packages/otree_startup/__init__.py", line 227, in do_django_setup
    django.setup()
  File "/app/.heroku/python/lib/python3.7/site-packages/django/__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/app/.heroku/python/lib/python3.7/site-packages/django/apps/registry.py", line 114, in populate
    app_config.import_models()
  File "/app/.heroku/python/lib/python3.7/site-packages/django/apps/config.py", line 211, in import_models
    self.models_module = import_module(models_module_name)
  File "/app/.heroku/python/lib/python3.7/importlib/__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/app/experimentMusic/models.py", line 21, in <module>
    class Constants(BaseConstants):
  File "/app/experimentMusic/models.py", line 26, in Constants
    with open('D:\Experiment\oTreeproject\oTreeonlineshop-master\shop\oTree\experimentMusic\products.json', 'r', encoding='utf-8') as jsonfile:
FileNotFoundError: [Errno 2] No such file or directory: 'D:\\Experiment\\oTreeproject\\oTreeonlineshop-master\\shop\\oTree\\experimentMusic\\products.json'

我还尝试了使用正常斜杠和双反斜杠的代码版本，仍然收到相同的错误。接下来，我尝试使用路径库中的路径重写models.py中的路径，如下所示：

from pathlib import Path

with open(Path('D:/Experiment/oTreeproject/oTreeonlineshop-master/shop/oTree/experimentMusic/products.json'), 'r', encoding='utf-8') as jsonfile:
        data=jsonfile.read()
        shoppinglist = json.loads(data)

它也不起作用，有类似的错误信息。

可能的问题是什么？文件products.json在那里并且不是空的，所以我不知道为什么它不能工作。我也尝试在我的笔记本电脑上运行这个实验，它工作得很好，所以我猜问题出在heroku上的部署上。欢迎任何建议，非常感谢！

最好的，莉娜

Answer 1

我想通了。解决方案是将.json文件的路径重写为相对路径(而不是绝对路径)。