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# =============================================================================
# OWSLib. Copyright (C) 2005 Sean C. Gillies
#
# Contact email: sgillies@frii.com
# =============================================================================
def patch_well_known_namespaces(etree_module):
import warnings
from owslib.namespaces import Namespaces
ns = Namespaces()
"""Monkey patches the etree module to add some well-known namespaces."""
try:
register_namespace = etree_module.register_namespace
except AttributeError:
try:
etree_module._namespace_map
def register_namespace(prefix, uri):
etree_module._namespace_map[uri] = prefix
except AttributeError:
def register_namespace(prefix, uri):
pass
warnings.warn("Only 'lxml.etree' >= 2.3 and 'xml.etree.ElementTree' >= 1.3 are fully supported!")
for k, v in ns.get_namespaces().iteritems():
register_namespace(k, v)
# try to find lxml or elementtree
try:
from lxml import etree
except ImportError:
try:
# Python 2.5 with ElementTree included
import xml.etree.ElementTree as etree
except ImportError:
try:
# Python < 2.5 with ElementTree installed
import elementtree.ElementTree as etree
except ImportError:
raise RuntimeError('You need either lxml or ElementTree to use OWSLib!')
patch_well_known_namespaces(etree)
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