Cannot start docker VM: ImportError: cannot import name 'format_lazy' from 'django.utils.text' (Python Error)

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英文:

Cannot start docker VM: ImportError: cannot import name 'format_lazy' from 'django.utils.text' (Python Error)

问题

无法启动Docker虚拟机,因为抛出了一个Python错误。

我尝试过从3.5切换到3.6再到3.7的Python版本。

我已经直接连接到虚拟机,并尝试从命令行直接运行命令(例如./manage.py makemigrations),但收到了相同的错误。manage.py的内容在底部。

使用以下命令构建的docker虚拟机:

  1. docker-compose build
  2. docker-compose up

当虚拟机启动时,会显示以下错误:

完整跟踪如下:

  1. web_1 | Traceback (most recent call last):
  2. web_1 | File "/usr/local/lib/python3.7/site-packages/django/utils/autoreload.py", line 226, in wrapper
  3. web_1 | fn(*args, **kwargs)
  4. web_1 | File "/usr/local/lib/python3.7/site-packages/django/core/management/commands/runserver.py", line 113, in inner_run
  5. web_1 | autoreload.raise_last_exception()
  6. web_1 | File "/usr/local/lib/python3.7/site-packages/django/utils/autoreload.py", line 249, in raise_last_exception
  7. web_1 | six.reraise(*_exception)
  8. web_1 | File "/usr/local/lib/python3.7/site-packages/django/utils/six.py", line 685, in reraise
  9. web_1 | raise value.with_traceback(tb)
  10. web_1 | File "/usr/local/lib/python3.7/site-packages/django/utils/autoreload.py", line 226, in wrapper
  11. web_1 | fn(*args, **kwargs)
  12. web_1 | File "/usr/local/lib/python3.7/site-packages/django/__init__.py", line 27, in setup
  13. web_1 | apps.populate(settings.INSTALLED_APPS)
  14. web_1 | File "/usr/local/lib/python3.7/site-packages/django/apps/registry.py", line 108, in populate
  15. web_1 | app_config.import_models(all_models)
  16. web_1 | File "/usr/local/lib/python3.7/site-packages/django/apps/config.py", line 199, in import_models
  17. web_1 | self.models_module = import_module(models_module_name)
  18. web_1 | File "/usr/local/lib/python3.7/importlib/__init__.py", line 127, in import_module
  19. web_1 | return _bootstrap._gcd_import(name[level:], package, level)
  20. web_1 | File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  21. web_1 | File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  22. web_1 | File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  23. web_1 | File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  24. web_1 | File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  25. web_1 | File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  26. web_1 | File "/usr/local/lib/python3.7/site-packages/filer/models/__init__.py", line 5, in <module>
  27. web_1 | from .imagemodels import * # noqa
  28. web_1 | File "/usr/local/lib/python3.7/site-packages/filer/models/imagemodels.py", line 12, in <module>
  29. web_1 | from .abstract import BaseImage
  30. web_1 | File "/usr/local/lib/python3.7/site-packages/filer/models/abstract.py", line 12, in <module>
  31. web_1 | from ..utils.compatibility import PILImage
  32. web_1 | File "/usr/local/lib/python3.7/site-packages/filer/utils/compatibility.py", line 8, in <module>
  33. web_1 | from django.utils.text import Truncator, format_lazy
  34. web_1 | ImportError: cannot import name 'format_lazy' from 'django.utils.text' (/usr/local/lib/python3.7/site-packages/django/utils/text.py)

Manage.py:

  1. #!/usr/bin/env python
  2. import os
  3. import sys
  4. if __name__ == "__main__":
  5. os.environ.setdefault("DJANGO_SETTINGS_MODULE", "app.settings")
  6. try:
  7. from django.core.management import execute_from_command_line
  8. except ImportError:
  9. # The above import may fail for some other reason. Ensure that the
  10. # issue is really that Django is missing to avoid masking other
  11. # exceptions on Python 2.
  12. try:
  13. import django
  14. except ImportError:
  15. raise ImportError(
  16. "Couldn't import Django. Are you sure it's installed and "
  17. "available on your PYTHONPATH environment variable? Did you "
  18. "forget to activate a virtual environment?"
  19. )
  20. raise
  21. execute_from_command_line(sys.argv)

Dockerfile内容:

  1. FROM python:3.7
  2. ENV PYTHONUNBUFFERED 1
  3. RUN mkdir /app
  4. WORKDIR /app
  5. ADD requirements.txt /app/
  6. RUN pip install pip==9.0.1
  7. RUN pip install -r requirements.txt
  8. ADD . /app/

docker-compose.yml:

  1. version: '2'
  2. services:
  3. db:
  4. image: postgres
  5. web:
  6. build: .
  7. command: python manage.py runserver 0.0.0.0:8000
  8. volumes:
  9. - .:/app
  10. ports:
  11. - "8000:8000"
  12. environment:
  13. DATABASE_URL: postgres://app@postgres:5432/app
  14. depends_on:
  15. - db
英文:

I cannot start a docker VM, due to a Python error that is being thrown.

I have tried switching Python versions from 3.5 to 3.6 to 3.7.

I have connected to the VM directly, and attempted to run commands directly from the command line (eg. ./manage.py makemigrations) and received the same error. The contents of manage.py are at the bottom.

The docker virtual machine that is built using:

  1. docker-compose pull
  2. docker-compose build
  3. docker-compose up

When the VM starts, the below error is shown:

  1. web_1 | ImportError: cannot import name 'format_lazy' from 'django.utils.text' (/usr/local/lib/python3.7/site-packages/django/utils/text.py)

Full trace below:

  1. web_1 | Unhandled exception in thread started by <function check_errors.<locals>.wrapper at 0x7f9ba32c7b90>
  2. web_1 | Traceback (most recent call last):
  3. web_1 | File "/usr/local/lib/python3.7/site-packages/django/utils/autoreload.py", line 226, in wrapper
  4. web_1 | fn(*args, **kwargs)
  5. web_1 | File "/usr/local/lib/python3.7/site-packages/django/core/management/commands/runserver.py", line 113, in inner_run
  6. web_1 | autoreload.raise_last_exception()
  7. web_1 | File "/usr/local/lib/python3.7/site-packages/django/utils/autoreload.py", line 249, in raise_last_exception
  8. web_1 | six.reraise(*_exception)
  9. web_1 | File "/usr/local/lib/python3.7/site-packages/django/utils/six.py", line 685, in reraise
  10. web_1 | raise value.with_traceback(tb)
  11. web_1 | File "/usr/local/lib/python3.7/site-packages/django/utils/autoreload.py", line 226, in wrapper
  12. web_1 | fn(*args, **kwargs)
  13. web_1 | File "/usr/local/lib/python3.7/site-packages/django/__init__.py", line 27, in setup
  14. web_1 | apps.populate(settings.INSTALLED_APPS)
  15. web_1 | File "/usr/local/lib/python3.7/site-packages/django/apps/registry.py", line 108, in populate
  16. web_1 | app_config.import_models(all_models)
  17. web_1 | File "/usr/local/lib/python3.7/site-packages/django/apps/config.py", line 199, in import_models
  18. web_1 | self.models_module = import_module(models_module_name)
  19. web_1 | File "/usr/local/lib/python3.7/importlib/__init__.py", line 127, in import_module
  20. web_1 | return _bootstrap._gcd_import(name[level:], package, level)
  21. web_1 | File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
  22. web_1 | File "<frozen importlib._bootstrap>", line 983, in _find_and_load
  23. web_1 | File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
  24. web_1 | File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
  25. web_1 | File "<frozen importlib._bootstrap_external>", line 728, in exec_module
  26. web_1 | File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  27. web_1 | File "/usr/local/lib/python3.7/site-packages/filer/models/__init__.py", line 5, in <module>
  28. web_1 | from .imagemodels import * # noqa
  29. web_1 | File "/usr/local/lib/python3.7/site-packages/filer/models/imagemodels.py", line 12, in <module>
  30. web_1 | from .abstract import BaseImage
  31. web_1 | File "/usr/local/lib/python3.7/site-packages/filer/models/abstract.py", line 12, in <module>
  32. web_1 | from ..utils.compatibility import PILImage
  33. web_1 | File "/usr/local/lib/python3.7/site-packages/filer/utils/compatibility.py", line 8, in <module>
  34. web_1 | from django.utils.text import Truncator, format_lazy
  35. web_1 | ImportError: cannot import name 'format_lazy' from 'django.utils.text' (/usr/local/lib/python3.7/site-packages/django/utils/text.py)

Manage.py:

  1. #!/usr/bin/env python
  2. import os
  3. import sys
  4. if __name__ == "__main__":
  5. os.environ.setdefault("DJANGO_SETTINGS_MODULE", "app.settings")
  6. try:
  7. from django.core.management import execute_from_command_line
  8. except ImportError:
  9. # The above import may fail for some other reason. Ensure that the
  10. # issue is really that Django is missing to avoid masking other
  11. # exceptions on Python 2.
  12. try:
  13. import django
  14. except ImportError:
  15. raise ImportError(
  16. "Couldn't import Django. Are you sure it's installed and "
  17. "available on your PYTHONPATH environment variable? Did you "
  18. "forget to activate a virtual environment?"
  19. )
  20. raise
  21. execute_from_command_line(sys.argv)

Dockerfile content:

  1. FROM python:3.7
  2. ENV PYTHONUNBUFFERED 1
  3. RUN mkdir /app
  4. WORKDIR /app
  5. ADD requirements.txt /app/
  6. RUN pip install pip==9.0.1
  7. RUN pip install -r requirements.txt
  8. ADD . /app/

docker-compose.yml

  1. version: '2'
  2. services:
  3. db:
  4. image: postgres
  5. web:
  6. build: .
  7. command: python manage.py runserver 0.0.0.0:8000
  8. volumes:
  9. - .:/app
  10. ports:
  11. - "8000:8000"
  12. environment:
  13. DATABASE_URL: postgres://app@postgres:5432/app
  14. depends_on:
  15. - db

答案1

得分: 0

django.utils.text.format_lazy 函数是在 Django 2.0 版本中添加的。

你应该要么升级到 2.0 版本的 Django,要么将扩展降级到不依赖于这个函数的版本。

英文:

django.utils.text.format_lazy function was added in Django 2.0.

You should either upgrade to a version of Django from 2.0 or downgrade the extension to a version that doesn't rely on this function.

huangapple
  • 本文由 发表于 2020年1月6日 20:46:20
  • 转载请务必保留本文链接:https://go.coder-hub.com/59612390.html
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