<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def create_context(pip_version=None, python_version=None):
 """Create a context containing the specific pip and python. Args: pip_version (str or `Version`):
 Version of pip to use, or latest if None. python_version (str or `Version`):
 Python version to use, or latest if None. Returns: `ResolvedContext`: Context containing pip and python. """

    # determine pip pkg to use for install, and python variants to install on
    if pip_version:
        pip_req = "pip-%s" % str(pip_version)
    else:
        pip_req = "pip"

    if python_version:
        ver = Version(str(python_version))
        major_minor_ver = ver.trim(2)
        py_req = "python-%s" % str(major_minor_ver)
    else:
        # use latest major.minor
        package = get_latest_package("python")
        if package:
            major_minor_ver = package.version.trim(2)
        else:
            # no python package. We're gonna fail, let's just choose current
            # python version (and fail at context creation time)
            major_minor_ver = '.'.join(map(str, sys.version_info[:2]))

        py_req = "python-%s" % str(major_minor_ver)

    # use pip + latest python to perform pip download operations
    request = [pip_req, py_req]

    with convert_errors(from_=(PackageFamilyNotFoundError, PackageNotFoundError),
                        to=BuildError, msg="Cannot run - pip or python rez "
                        "package is not present"):
        context = ResolvedContext(request)

    # print pip package used to perform the install
    pip_variant = context.get_resolved_package("pip")
    pip_package = pip_variant.parent
    print_info("Using %s (%s)" % (pip_package.qualified_name, pip_variant.uri))

    return context