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"""
Extracts the version of the PostgreSQL server.
"""
import re
# This reg-exp is intentionally fairly flexible here. Require only the major
# and minor version numbers, but need to be able to handle standard stuff like:
# PostgreSQL 8.3.6
# EnterpriseDB 8.3
# PostgreSQL 8.3 beta4
VERSION_RE = re.compile(r'\S+ (\d+)\.(\d+)')
def get_version(cursor):
"""
Returns a tuple representing the major and minor version number of the
server. For example, (7, 4) or (8, 3).
"""
cursor.execute("SELECT version()")
version = cursor.fetchone()[0]
major, minor = VERSION_RE.search(version).groups()
return int(major), int(minor)
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