如何解决是否安装了GDAL？如果是，尝试在设置问题中设置GDAL_LIBRARY_PATH。

Question

我正在Windows 10上运行，并且已经成功地从以下资源安装了gdal 64位库：https://trac.osgeo.org/osgeo4w/

我的django应用程序正在使用pipenv运行

我还在我的settings.py中添加了变量：GDAL_LIBRARY_PATH = 'C:\OSGeo4W64\bin'，还将这个变量添加到路径变量ins系统变量中。

每次运行开发服务器后，我都会得到以下错误：

Exception in thread django-main-thread:
Traceback (most recent call last):
  File "C:\Users\Maria\AppData\Local\Programs\Python\Python37\lib\threading.py", line 926, in _bootstrap_inner
    self.run()
  File "C:\Users\Maria\AppData\Local\Programs\Python\Python37\lib\threading.py", line 870, in run
    self._target(*self._args, **self._kwargs)
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\utils\autoreload.py", line 53, in wrapper
    fn(*args, **kwargs)
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\core\management\commands\runserver.py", line 109, in inner_run
    autoreload.raise_last_exception()
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\utils\autoreload.py", line 76, in raise_last_exception
    raise _exception[1]
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\core\management\__init__.py", line 357, in execute
    autoreload.check_errors(django.setup)()
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\utils\autoreload.py", line 53, in wrapper
    fn(*args, **kwargs)
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\apps\registry.py", line 114, in populate
    app_config.import_models()
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\apps\config.py", line 211, in import_models
    self.models_module = import_module(models_module_name)
  File "C:\Users\Maria\AppData\Local\Programs\Python\Python37\lib\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 "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\contrib\auth\models.py", line 2, in <module>
    from django.contrib.auth.base_user import AbstractBaseUser, BaseUserManager
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\contrib\auth\base_user.py", line 47, in <module>
    class AbstractBaseUser(models.Model):
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\db\models\base.py", line 121, in __new__
    new_class.add_to_class('_meta', Options(meta, app_label))
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\db\models\base.py", line 325, in add_to_class
    value.contribute_to_class(cls, name)
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\db\models\options.py", line 208, in contribute_to_class
    self.db_table = truncate_name(self.db_table, connection.ops.max_name_length())
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\db\__init__.py", line 28, in __getattr__
    return getattr(connections[DEFAULT_DB_ALIAS], item)
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\db\utils.py", line 207, in __getitem__
    backend = load_backend(db['ENGINE'])
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\db\utils.py", line 111, in load_backend
    return import_module('%s.base' % backend_name)
  File "C:\Users\Maria\AppData\Local\Programs\Python\Python37\lib\importlib\__init__.py", line 127, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\contrib\gis\db\backends\postgis\base.py", line 6, in <module>
    from .features import DatabaseFeatures
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\contrib\gis\db\backends\postgis\features.py", line 1, in <module>
    from django.contrib.gis.db.backends.base.features import BaseSpatialFeatures
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\contrib\gis\db\backends\base\features.py", line 3, in <module>
    from django.contrib.gis.db.models import aggregates
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\contrib\gis\db\models\__init__.py", line 3, in <module>
    import django.contrib.gis.db.models.functions  # NOQA
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\contrib\gis\db\models\functions.py", line 3, in <module>
    from django.contrib.gis.db.models.fields import BaseSpatialField, GeometryField
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\contrib\gis\db\models\fields.py", line 3, in <module>
    from django.contrib.gis import forms, gdal
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\contrib\gis\forms\__init__.py", line 3, in <module>
    from .fields import (  # NOQA
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\contrib\gis\forms\fields.py", line 2, in <module>
    from django.contrib.gis.gdal import GDALException
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\contrib\gis\gdal\__init__.py", line 28, in <module>
    from django.contrib.gis.gdal.datasource import DataSource
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\contrib\gis\gdal\datasource.py", line 39, in <module>
    from django.contrib.gis.gdal.driver import Driver
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\contrib\gis\gdal\driver.py", line 5, in <module>
    from django.contrib.gis.gdal.prototypes import ds as vcapi, raster as rcapi
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\contrib\gis\gdal\prototypes\ds.py", line 9, in <module>
    from django.contrib.gis.gdal.libgdal import GDAL_VERSION, lgdal
  File "C:\Users\Maria\.virtualenvs\ev-loader-backend-7qq6TCvy\lib\site-packages\django\contrib\gis\gdal\libgdal.py", line 42, in <module>
    % '", "'.join(lib_names)
django.core.exceptions.ImproperlyConfigured: Could not find the GDAL library (tried "gdal204", "gdal203", "gdal202", "gdal201", "gdal20"). Is GDAL installed? If it is, try setting GDAL_LIBRARY_PATH in your settings.

我怎样才能解决这个问题？

Answer 1

看起来，您需要对GDAL路径进行进一步的研究。试一试

GDAL_LIBRARY_PATH = r'C:\OSGeo4W64\bin\gdal300'

您可能必须将gdal300部件更改为任何版本的gdal。还要检查以确保您正在运行64位Python。否则，您可能得到了错误的osgeo4w版本。