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我该怎么做才能在苍鹭身上使用巨蟒魔法?

python-magic heroku python

Pablo Fernandez · 技术社区 · 6 年前

我正在构建一个正在使用的应用程序 python-magic 0.4.15 . 在我的本地机器上, python-magic-bin 0.4.15 就像一个魅力(窗户),但我正在努力让它在Heroku上工作。首先,我只是想让苍鹭词的测试通过。我把包裹添加到我的 requirements.txt :

python-magic==0.4.15

把它推到希罗库。安装正确:

-----> Installing requirements with pip
       Collecting python-magic==0.4.15 (from -r /app/requirements.txt (line 7))
         Downloading https://files.pythonhosted.org/packages/42/a1/76d30c79992e3750dac6790ce16f056f870d368ba142f83f75f694d93001/python_magic-0.4.15-py2.py3-none-any.whl
       Installing collected packages: python-magic
       Successfully installed python-magic-0.4.15

但是它却像这样崩溃了:

+ python manage.py collectstatic --no-input
Traceback (most recent call last):
  File "manage.py", line 20, in <module>
    execute_from_command_line(sys.argv)
  File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
    utility.execute()
  File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/__init__.py", line 357, in execute
    django.setup()
  File "/app/.heroku/python/lib/python3.6/site-packages/django/__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/app/.heroku/python/lib/python3.6/site-packages/django/apps/registry.py", line 120, in populate
    app_config.ready()
  File "/app/.heroku/python/lib/python3.6/site-packages/django/contrib/admin/apps.py", line 24, in ready
    self.module.autodiscover()
  File "/app/.heroku/python/lib/python3.6/site-packages/django/contrib/admin/__init__.py", line 26, in autodiscover
    autodiscover_modules('admin', register_to=site)
  File "/app/.heroku/python/lib/python3.6/site-packages/django/utils/module_loading.py", line 47, in autodiscover_modules
    import_module('%s.%s' % (app_config.name, module_to_search))
  File "/app/.heroku/python/lib/python3.6/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 994, in _gcd_import
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/app/core/admin.py", line 8, in <module>
    from .forms import CrmDataUploadForm
  File "/app/core/forms.py", line 3, in <module>
    from magic import magic
ImportError: cannot import name 'magic'

我试着加 the NetsoftHoldings/heroku-buildpack-magic buildpack 我可以看到它正在被下载:

-----> Fetching https://github.com/NetsoftHoldings/heroku-buildpack-magic.git buildpack...
       buildpack downloaded

正在正确安装PIP包:

----->用PIP安装要求
收集python magic==0.4.15(来自-r/app/requirements.txt(第7行))。
下载https://files.pythonhosted.org/packages/42/a1/76d30c79992e3750dac6790ce16f056f870d368ba142f83f75f694d93001/python-magic-0.4.15-py2.py3-none-any.whl
安装收集的包:python magic
已成功安装python-magic-0.4.15

但是,buildback似乎有一个错误(我猜是这样的):

-----> libmagic app detected
bash: /tmp/buildpacks/27353aa3b5edb2f8361186206e863f5d481f02805d02f0efdec439f3d30349a4fbdad2951af33a0492023fb0d90d26dafda6fe76f1b2d34f68564a98545f7022/export: No such file or directory
RootDir: /tmp/buildpacks/ba9220b10d71b7b776013869da2c820ccb5c0f1733268ae2515b3b8ad5edd44d2016d1119bce32d1660fbd84da179891a404dcc57df043b9d82e22725739b072
BuildDir: /app
HOME: /app
Build list
config
Home list
config

它最终会像这样崩溃:

+python manage.py collectstatic--无输入
回溯(最近一次呼叫的最后一次):
文件“manage.py”,第20行,在<模块中>
从命令行(sys.argv)执行
文件“/app/.heroku/python/lib/python3.6/site packages/django/core/management/uu init_uuuuy”,第381行,在执行行中,来自命令行
实用程序.execute()
文件“/app/.heroku/python/lib/python3.6/site packages/django/core/management/uuu init_uuuy”,第357行,执行中
Django.StUpUP()
文件“/app/.heroku/python/lib/python3.6/site packages/django/uuu init_uuuy”,第24行,设置中
apps.populate(设置。已安装的应用程序)
文件“/app/.heroku/python/lib/python3.6/site packages/django/apps/registry.py”,第120行,填充
应用程序配置就绪()
文件“/app/.heroku/python/lib/python3.6/site packages/django/contrib/admin/apps.py”,第24行,就绪
self.module.autodiscover()。
文件“/app/.heroku/python/lib/python3.6/site packages/django/contrib/admin/uuu init_uuu.py”,第26行,在自动发现中
autodiscover_modules('admin',register_to=site)
文件“/app/.heroku/python/lib/python3.6/site packages/django/utils/module-loading.py”,第47行,在自动发现模块中
导入_模块(“%s.%s%”(app_config.name,module_to_search))。
文件“/app/.heroku/python/lib/python3.6/import lib/uuu init_uuuuy”,第126行,在import_模块中
返回_bootstrap._gcd_import(name[level:],package,level)
文件“<frozen importlib._bootstrap>”,第994行,在_gcd_import中
文件“<frozed importlib.\u bootstrap>”,第971行,位于“查找”和“加载”中
文件“<frozed importlib.\u bootstrap>”,第955行,在“查找”和“加载”中解锁
文件“<frozed importlib._bootstrap>”,第665行,in _load_unlocked
文件“<frozed importlib._bootstrap_external>”,第678行,在exec_模块中
文件“<frozed importlib.\u bootstrap>”,第219行,在“调用”中删除“帧”后
文件“/app/core/admin.py”,第8行,在<模块中>
从.forms导入crmdataUploadForm
文件“/app/core/forms.py”,第3行,在<模块中>
从魔术进口魔术
导入错误:无法导入名称“magic”

然后我尝试添加 heroku-community/apt 构建包和包含以下内容的APT文件:

libmagic-dev
libmagic1

我可以看到它们安装正确:

-----> Fetching .debs for libmagic-dev
       Reading package lists...
       Building dependency tree...
       0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 23 not upgraded.
       Need to get 79.4 kB of archives.
       After this operation, 0 B of additional disk space will be used.
       Get:1 http://archive.ubuntu.com/ubuntu bionic-security/main amd64 libmagic-dev amd64 1:5.32-2ubuntu0.1 [79.4 kB]
       Fetched 79.4 kB in 0s (222 kB/s)
       Download complete and in download only mode
W: --force-yes is deprecated, use one of the options starting with --allow instead.
-----> Fetching .debs for libmagic1
       Reading package lists...
       Building dependency tree...
       0 upgraded, 0 newly installed, 1 reinstalled, 0 to remove and 23 not upgraded.
       Need to get 68.4 kB of archives.
       After this operation, 0 B of additional disk space will be used.
       Get:1 http://archive.ubuntu.com/ubuntu bionic-security/main amd64 libmagic1 amd64 1:5.32-2ubuntu0.1 [68.4 kB]
       Fetched 68.4 kB in 0s (199 kB/s)
       Download complete and in download only mode
W: --force-yes is deprecated, use one of the options starting with --allow instead.
-----> Installing libmagic1_1%3a5.32-2ubuntu0.1_amd64.deb
-----> Installing libmagic-dev_1%3a5.32-2ubuntu0.1_amd64.deb

但应用程序仍然失败,错误相同:

+ pip install -r requirements-test.txt
Requirement already satisfied: coverage==4.5.1 in ./.heroku/python/lib/python3.6/site-packages (from -r requirements-test.txt (line 1))
Requirement already satisfied: selenium==3.141.0 in ./.heroku/python/lib/python3.6/site-packages (from -r requirements-test.txt (line 2))
Requirement already satisfied: urllib3 in ./.heroku/python/lib/python3.6/site-packages (from selenium==3.141.0->-r requirements-test.txt (line 2))
You are using pip version 9.0.2, however version 18.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
+ python manage.py collectstatic --no-input
Traceback (most recent call last):
  File "manage.py", line 20, in <module>
    execute_from_command_line(sys.argv)
  File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
    utility.execute()
  File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/__init__.py", line 357, in execute
    django.setup()
  File "/app/.heroku/python/lib/python3.6/site-packages/django/__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/app/.heroku/python/lib/python3.6/site-packages/django/apps/registry.py", line 120, in populate
    app_config.ready()
  File "/app/.heroku/python/lib/python3.6/site-packages/django/contrib/admin/apps.py", line 24, in ready
    self.module.autodiscover()
  File "/app/.heroku/python/lib/python3.6/site-packages/django/contrib/admin/__init__.py", line 26, in autodiscover
    autodiscover_modules('admin', register_to=site)
  File "/app/.heroku/python/lib/python3.6/site-packages/django/utils/module_loading.py", line 47, in autodiscover_modules
    import_module('%s.%s' % (app_config.name, module_to_search))
  File "/app/.heroku/python/lib/python3.6/importlib/__init__.py", line 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "<frozen importlib._bootstrap>", line 994, in _gcd_import
  File "<frozen importlib._bootstrap>", line 971, in _find_and_load
  File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 678, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/app/core/admin.py", line 8, in <module>
    from .forms import CrmDataUploadForm
  File "/app/core/forms.py", line 3, in <module>
    from magic import magic
ImportError: cannot import name 'magic'

有什么关于如何让巨蟒魔法在Heroku上工作的想法吗?

1 回复 | 直到 6 年前

Pablo Fernandez 6 年前

导入的正确方法 magic 模块是:

import magic

不

from magic import magic

python magic只提供了一个 魔术 模块和python magic bin的作用相同。问题是python magic bin有一个名为 magic that imports the module magic.magic 这有点像内部细节,因此后一个示例在python magic bin中工作,但不在python magic中工作。

从python magic文档中:

>>> import magic
>>> magic.from_file("testdata/test.pdf")
'PDF document, version 1.2'
>>> magic.from_buffer(open("testdata/test.pdf").read(1024))
'PDF document, version 1.2'
>>> magic.from_file("testdata/test.pdf", mime=True)
'application/pdf'