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"""Various components of SNMP applications"""
import os
import sys
import string
def switchApiVersion(subPkg):
pkg = os.path.split(__path__[0])[-1]
newMod = __import__(subPkg, globals(), locals())
realPkg = '_real_' + pkg
if sys.modules.has_key(realPkg):
sys.modules[pkg] = sys.modules[realPkg]
sys.modules[realPkg] = sys.modules[pkg]
sys.modules[pkg] = newMod
def __isSubPackage(subDir):
if subDir and subDir[0] == 'v' and subDir[1] in string.digits \
and len(subDir) == 2:
return 1
if os.environ.has_key('PYSNMP_API_VERSION'):
v = os.environ['PYSNMP_API_VERSION']
if v:
switchApiVersion(v) # do not load any API
else:
subDirs = filter(__isSubPackage, os.listdir(__path__[0]))
subDirs.sort();
switchApiVersion(subDirs[-1]) # take the most recent version
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