"""

If the current installed python version is not 2.7, prints an error

message to stderr and returns 1

"""

from __future__ import print_function

import sys

msg = """ERROR: Your Python version is: %s

Galaxy is currently supported on Python 2.7 only. To run Galaxy,

please download and install a supported version from python.org. If a

supported version is installed but is not your default, getgalaxy.org

contains instructions on how to force Galaxy to use a different version.""" % sys.version[:3]

def check_python():

try:

assert sys.version_info[:2] == ( 2, 7 )

except AssertionError:

print(msg, file=sys.stderr)

raise

if __name__ == '__main__':

rval = 0

try:

check_python()

except Exception:

rval = 1

sys.exit( rval )