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VERSION = (1, 4, 22, 'final', 0)
def get_version(version=None):
"""Derives a PEP386-compliant version number from VERSION."""
if version is None:
version = VERSION
assert len(version) == 5
assert version[3] in ('alpha', 'beta', 'rc', 'final')
# Now build the two parts of the version number:
# main = X.Y[.Z]
# sub = .devN - for pre-alpha releases
# | {a|b|c}N - for alpha, beta and rc releases
parts = 2 if version[2] == 0 else 3
main = '.'.join(str(x) for x in version[:parts])
sub = ''
if version[3] == 'alpha' and version[4] == 0:
# At the toplevel, this would cause an import loop.
from django.utils.version import get_svn_revision
svn_revision = get_svn_revision()[4:]
if svn_revision != 'unknown':
sub = '.dev%s' % svn_revision
elif version[3] != 'final':
mapping = {'alpha': 'a', 'beta': 'b', 'rc': 'c'}
sub = mapping[version[3]] + str(version[4])
return main + sub
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