本文整理汇总了Python中sqlalchemy.util.compat.inspect_getargspec方法的典型用法代码示例。如果您正苦于以下问题：Python compat.inspect_getargspec方法的具体用法？Python compat.inspect_getargspec怎么用？Python compat.inspect_getargspec使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类sqlalchemy.util.compat的用法示例。
在下文中一共展示了compat.inspect_getargspec方法的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: __init__
# 需要导入模块: from sqlalchemy.util import compat [as 别名]
# 或者: from sqlalchemy.util.compat import inspect_getargspec [as 别名]
def __init__(self, lambda_, description=None, args=None, kw=None):
spec = inspect_getargspec(lambda_)
if not spec[0]:
self.lambda_ = lambda db: lambda_()
else:
self.lambda_ = lambda_
self.args = args or ()
self.kw = kw or {}
if description:
self.description = description
elif lambda_.__doc__:
self.description = lambda_.__doc__
else:
self.description = "custom function" 示例2: _instrument_membership_mutator
# 需要导入模块: from sqlalchemy.util import compat [as 别名]
# 或者: from sqlalchemy.util.compat import inspect_getargspec [as 别名]
def _instrument_membership_mutator(method, before, argument, after):
"""Route method args and/or return value through the collection
adapter."""
# This isn't smart enough to handle @adds(1) for 'def fn(self, (a, b))'
if before:
fn_args = list(util.flatten_iterator(inspect_getargspec(method)[0]))
if isinstance(argument, int):
pos_arg = argument
named_arg = len(fn_args) > argument and fn_args[argument] or None
else:
if argument in fn_args:
pos_arg = fn_args.index(argument)
else:
pos_arg = None
named_arg = argument
del fn_args
def wrapper(*args, **kw):
if before:
if pos_arg is None:
if named_arg not in kw:
raise sa_exc.ArgumentError(
"Missing argument %s" % argument)
value = kw[named_arg]
else:
if len(args) > pos_arg:
value = args[pos_arg]
elif named_arg in kw:
value = kw[named_arg]
else:
raise sa_exc.ArgumentError(
"Missing argument %s" % argument)
initiator = kw.pop('_sa_initiator', None)
if initiator is False:
executor = None
else:
executor = args[0]._sa_adapter
if before and executor:
getattr(executor, before)(value, initiator)
if not after or not executor:
return method(*args, **kw)
else:
res = method(*args, **kw)
if res is not None:
getattr(executor, after)(res, initiator)
return res
wrapper._sa_instrumented = True
if hasattr(method, "_sa_instrument_role"):
wrapper._sa_instrument_role = method._sa_instrument_role
wrapper.__name__ = method.__name__
wrapper.__doc__ = method.__doc__
return wrapper