rez.rex_bindings#

Provides wrappers for various types for binding to Rex. We do not want to bind object instances directly in Rex, because this would create an indirect dependency between rex code in package.py files, and versions of Rez.

The classes in this file are intended to have simple interfaces that hide unnecessary data from Rex, and provide APIs that will not change.

class rez.rex_bindings.Binding#

Bases: object

Abstract base class.

__init__(data=None)#

class rez.rex_bindings.VersionBinding#

Bases: Binding

Binds a version.Version object.

Examples

>>> v = VersionBinding(Version("1.2.3alpha"))
>>> v.major
1
>>> v.patch
'3alpha'
>>> len(v)
3
>>> v[1]
2
>>> v[:3]
(1, 2, '3alpha')
>>> str(v)
'1.2.3alpha'
>>> print(v[5])
None
>>> v.as_tuple():
(1, 2, '3alpha')

__init__(version)#

property major#

property minor#

property patch#

as_tuple()#

class rez.rex_bindings.VariantBinding#

Bases: Binding

Binds a packages.Variant object.

__init__(variant, cached_root=None, interpreter=None)#

property root#: This is here to support package caching. This ensures that references such as ‘resolve.mypkg.root’ resolve to the cached payload location, if the package is cached.

class rez.rex_bindings.RO_MappingBinding#

Bases: Binding

A read-only, dict-like object.

__init__(data)#

get(name, default=None)#

class rez.rex_bindings.VariantsBinding#

Bases: RO_MappingBinding

Binds a list of packages.VariantBinding objects, under the package name of each variant.

__init__(variant_bindings)#

get(name, default=None)#

class rez.rex_bindings.RequirementsBinding#

Bases: RO_MappingBinding

Binds a list of version.Requirement objects.

__init__(requirements)#

get_range(name, default=None)#: Returns requirement version range object

get(name, default=None)#

class rez.rex_bindings.EphemeralsBinding#

Bases: RO_MappingBinding

Binds a list of resolved ephemeral packages.

Note

The leading ‘.’ is implied when referring to ephemerals. Eg:

# in package.py
def commands():
    if "foo.cli" in ephemerals:  # will match '.foo.cli-*' request

__init__(ephemerals)#

get_range(name, default=None)#: Returns ephemeral version range object

get(name, default=None)#

rez.rex_bindings.intersects(obj, range_)#

Test if an object intersects with the given version range.

Examples

# in package.py
def commands():
    # test a request
    if intersects(request.maya, '2019+'):
        info('requested maya allows >=2019.*')

    # tests if a resolved version intersects with given range
    if intersects(resolve.maya, '2019+')
        ...

    # same as above
    if intersects(resolve.maya.version, '2019+')
        ...

# disable my cli tools if .foo.cli-0 was specified
def commands():
    if intersects(ephemerals.get('foo.cli', '1'), '1'):
        env.PATH.append('{root}/bin')

Parameters:

obj (VariantBinding or str) – Object to test, either a variant, or requirement string (eg ‘foo-1.2.3+’).
range (str) – Version range, eg ‘1.2+<2’

Returns:

True if the object intersects the given range.

Return type:

bool