node/tools/getnodeversion.py

import os,re; 

node_version_h = os.path.join(os.path.dirname(__file__), '..', 'src',
    'node_version.h')

f = open(node_version_h)

for line in f:
  if re.match('#define NODE_MAJOR_VERSION', line):
    major = line.split()[2]
  if re.match('#define NODE_MINOR_VERSION', line):
    minor = line.split()[2]
  if re.match('#define NODE_PATCH_VERSION', line):
    patch = line.split()[2]

print '{0:s}.{1:s}.{2:s}'.format(major, minor, patch)