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microversion_parse
==================
A simple parser for OpenStack microversion headers::
import microversion_parse
# headers is a dict of headers with folded (comma-separated
# values) or a list of header, value tuples
version = microversion_parse.get_version(
headers, service_type='compute',
legacy_headers=['x-openstack-nova-api-version'])
It processes microversion headers with the standard form::
OpenStack-API-Version: compute 2.1
If provided with a ``legacy_headers`` argument, this is treated as
a list of headers to check for microversions. Some examples of
headers include::
OpenStack-telemetry-api-version: 2.1
OpenStack-nova-api-version: 2.1
X-OpenStack-nova-api-version: 2.1
If a version string cannot be found, ``None`` will be returned. If
the input is incorrect usual Python exceptions (ValueError,
TypeError) are allowed to raise to the caller.
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