/usr/lib/python2.6/site-packages/keystoneclient
Edit: /usr/lib/python2.6/site-packages/keystoneclient/utils.pyc (12733B)
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ƒ | f } t i | ƒ ‚ n Xd S( s Helper for the _find_* methods.s utf-8t strictt names' No %s with a name or ID of '%s' exists.sB Multiple %s matches found for '%s', use an ID to be more specific.N(
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t | _ | S( sΠAdds 'unauthenticated' attribute to decorated function.
Usage::
@unauthenticated
def mymethod(f):
...
( t Truet unauthenticated( R+ ( ( sC /tmp/pip-build-cD3xZi/python-keystoneclient/keystoneclient/utils.pyRR { s c C s t | d t ƒ S( sµ Checks to see if the function is marked as not requiring authentication
with the @unauthenticated decorator.
Returns True if decorator is set to True, False otherwise.
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positionalc B sV e Z d Z d Z d Z d e d „ Z e d e d „ ƒ Z e d „ ƒ Z d „ Z RS( sŠ A decorator which enforces only some args may be passed positionally.
This idea and some of the code was taken from the oauth2 client of the
google-api client.
This decorator makes it easy to support Python 3 style key-word only
parameters. For example, in Python 3 it is possible to write::
def fn(pos1, *, kwonly1, kwonly2=None):
...
All named parameters after * must be a keyword::
fn(10, 'kw1', 'kw2') # Raises exception.
fn(10, kwonly1='kw1', kwonly2='kw2') # Ok.
To replicate this behaviour with the positional decorator you simply
specify how many arguments may be passed positionally. To replicate the
example above::
@positional(1)
def fn(pos1, kwonly1=None, kwonly2=None):
...
If no default value is provided to a keyword argument, it becomes a
required keyword argument::
@positional(0)
def fn(required_kw):
...
This must be called with the keyword parameter::
fn() # Raises exception.
fn(10) # Raises exception.
fn(required_kw=10) # Ok.
When defining instance or class methods always remember that in python the
first positional argument passed is always the instance so you will need to
account for `self` and `cls`::
class MyClass(object):
@positional(2)
def my_method(self, pos1, kwonly1=None):
...
@classmethod
@positional(2)
def my_method(cls, pos1, kwonly1=None):
...
If you would prefer not to account for `self` and `cls` you can use the
`method` and `classmethod` helpers which do not consider the initial
positional argument. So the following class is exactly the same as the one
above::
class MyClass(object):
@positional.method(1)
def my_method(self, pos1, kwonly1=None):
...
@positional.classmethod(1)
def my_method(cls, pos1, kwonly1=None):
...
If a value isn't provided to the decorator then it will enforce that
every variable without a default value will be required to be a kwarg::
@positional()
def fn(pos1, kwonly1=None):
...
fn(10) # Ok.
fn(10, 20) # Raises exception.
fn(10, kwonly1=20) # Ok.
This behaviour will work with the `positional.method` and
`positional.classmethod` helper functions as well::
class MyClass(object):
@positional.classmethod()
def my_method(cls, pos1, kwonly1=None):
...
MyClass.my_method(10) # Ok.
MyClass.my_method(10, 20) # Raises exception.
MyClass.my_method(10, kwonly1=20) # Ok.
For compatibility reasons you may wish to not always raise an exception so
a WARN mode is available. Rather than raise an exception a warning message
will be logged::
@positional(1, enforcement=positional.WARN):
def fn(pos1, kwonly=1):
...
Available modes are:
- positional.EXCEPT - the default, raise an exception.
- positional.WARN - log a warning on mistake.
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