XBee-2.1.0 Python setup.py install fails

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What steps will reproduce the problem?
1. python setup.py install
2.On a debian system with ARM processor
3.Python version is 2.5.2,  Python-serial package installed fine

What is the expected output? What do you see instead?
python setup.py install fails with the error --
ts7500:~/xbee_python/XBee-2.1.0# python setup.py install
running install
running build
running build_py
running install_lib
byte-compiling /usr/lib/python2.5/site-packages/xbee/base.py to base.pyc
  File "/usr/lib/python2.5/site-packages/xbee/base.py", line 167
    packet = b''
               ^
SyntaxError: invalid syntax

byte-compiling /usr/lib/python2.5/site-packages/xbee/frame.py to frame.pyc
  File "/usr/lib/python2.5/site-packages/xbee/frame.py", line 18
    START_BYTE = b'\x7E'
                       ^
SyntaxError: invalid syntax

What version of the product are you using? On what operating system?

XBee-2.1.0
Please provide any additional information below.

SyntaxError: invalid syntax

byte-compiling /usr/lib/python2.5/site-packages/xbee/zigbee.py to zigbee.pyc
  File "/usr/lib/python2.5/site-packages/xbee/zigbee.py", line 36
    [{'name':'id',        'len':1,      'default':b'\x08'},
                                                        ^
SyntaxError: invalid syntax

byte-compiling /usr/lib/python2.5/site-packages/xbee/tests/Fake.py to Fake.pyc
  File "/usr/lib/python2.5/site-packages/xbee/tests/Fake.py", line 17
    self.data = b''
                  ^
SyntaxError: invalid syntax

byte-compiling /usr/lib/python2.5/site-packages/xbee/tests/test_base.py to 
test_base.pyc
  File "/usr/lib/python2.5/site-packages/xbee/tests/test_base.py", line 28
    xbee._write(b'\x00')
                      ^
SyntaxError: invalid syntax

byte-compiling /usr/lib/python2.5/site-packages/xbee/tests/test_frame.py to 
test_frame.pyc
  File "/usr/lib/python2.5/site-packages/xbee/tests/test_frame.py", line 23
    data = b'\x00'
                 ^
SyntaxError: invalid syntax

byte-compiling /usr/lib/python2.5/site-packages/xbee/tests/test_ieee.py to 
test_ieee.pyc
  File "/usr/lib/python2.5/site-packages/xbee/tests/test_ieee.py", line 77
    expected_data = b'\x08+MY'
                             ^
SyntaxError: invalid syntax

byte-compiling /usr/lib/python2.5/site-packages/xbee/tests/test_zigbee.py to 
test_zigbee.pyc
  File "/usr/lib/python2.5/site-packages/xbee/tests/test_zigbee.py", line 25
    expected_data = b'\x01\x02\x03\x04'
                                      ^
SyntaxError: invalid syntax

running install_egg_info
Removing /usr/lib/python2.5/site-packages/XBee-2.1.0.egg-info
Writing /usr/lib/python2.5/site-packages/XBee-2.1.0.egg-info

PLease notice that install of XBee-2.1.0.egg-info package succeeded , but 
install-lib fails.

Original issue reported on code.google.com by pracoo...@gmail.com on 16 Mar 2015 at 6:28