mirror of
https://github.com/jazzband/django-configurations.git
synced 2026-03-16 22:20:27 +00:00
137 lines
4.8 KiB
Python
137 lines
4.8 KiB
Python
import inspect
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import sys
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from importlib import import_module
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from django.core.exceptions import ImproperlyConfigured
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from django.utils import six
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def isuppercase(name):
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return name == name.upper() and not name.startswith('_')
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def uppercase_attributes(obj):
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return dict((name, getattr(obj, name))
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for name in filter(isuppercase, dir(obj)))
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def import_by_path(dotted_path, error_prefix=''):
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"""
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Import a dotted module path and return the attribute/class designated by
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the last name in the path. Raise ImproperlyConfigured if something goes
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wrong.
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Backported from Django 1.6.
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"""
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try:
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module_path, class_name = dotted_path.rsplit('.', 1)
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except ValueError:
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raise ImproperlyConfigured("{0}{1} doesn't look like "
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"a module path".format(error_prefix,
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dotted_path))
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try:
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module = import_module(module_path)
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except ImportError as err:
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msg = '{0}Error importing module {1}: "{2}"'.format(error_prefix,
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module_path,
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err)
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six.reraise(ImproperlyConfigured, ImproperlyConfigured(msg),
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sys.exc_info()[2])
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try:
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attr = getattr(module, class_name)
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except AttributeError:
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raise ImproperlyConfigured('{0}Module "{1}" does not define a '
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'"{2}" attribute/class'.format(error_prefix,
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module_path,
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class_name))
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return attr
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def reraise(exc, prefix=None, suffix=None):
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args = exc.args
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if not args:
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args = ('',)
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if prefix is None:
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prefix = ''
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elif not prefix.endswith((':', ': ')):
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prefix = prefix + ': '
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if suffix is None:
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suffix = ''
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elif not (suffix.startswith('(') and suffix.endswith(')')):
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suffix = '(' + suffix + ')'
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exc.args = ('{0} {1} {2}'.format(prefix, args[0], suffix),) + args[1:]
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raise
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# Copied over from Sphinx
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if sys.version_info >= (3, 0):
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from functools import partial
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def getargspec(func):
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"""Like inspect.getargspec but supports functools.partial as well."""
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if inspect.ismethod(func):
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func = func.__func__
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if type(func) is partial:
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orig_func = func.func
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argspec = getargspec(orig_func)
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args = list(argspec[0])
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defaults = list(argspec[3] or ())
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kwoargs = list(argspec[4])
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kwodefs = dict(argspec[5] or {})
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if func.args:
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args = args[len(func.args):]
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for arg in func.keywords or ():
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try:
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i = args.index(arg) - len(args)
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del args[i]
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try:
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del defaults[i]
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except IndexError:
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pass
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except ValueError: # must be a kwonly arg
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i = kwoargs.index(arg)
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del kwoargs[i]
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del kwodefs[arg]
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return inspect.FullArgSpec(args, argspec[1], argspec[2],
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tuple(defaults), kwoargs,
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kwodefs, argspec[6])
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while hasattr(func, '__wrapped__'):
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func = func.__wrapped__
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if not inspect.isfunction(func):
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raise TypeError('%r is not a Python function' % func)
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return inspect.getfullargspec(func)
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else: # 2.6, 2.7
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from functools import partial
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def getargspec(func):
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"""Like inspect.getargspec but supports functools.partial as well."""
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if inspect.ismethod(func):
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func = func.im_func
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parts = 0, ()
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if type(func) is partial:
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keywords = func.keywords
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if keywords is None:
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keywords = {}
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parts = len(func.args), keywords.keys()
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func = func.func
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if not inspect.isfunction(func):
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raise TypeError('%r is not a Python function' % func)
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args, varargs, varkw = inspect.getargs(func.func_code)
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func_defaults = func.func_defaults
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if func_defaults is None:
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func_defaults = []
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else:
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func_defaults = list(func_defaults)
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if parts[0]:
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args = args[parts[0]:]
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if parts[1]:
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for arg in parts[1]:
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i = args.index(arg) - len(args)
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del args[i]
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try:
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del func_defaults[i]
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except IndexError:
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pass
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return inspect.ArgSpec(args, varargs, varkw, func_defaults)
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