version: use separate file for versioning

amodem/__main__.py

@@ -2,6 +2,7 @@
 # PYTHON_ARGCOMPLETE_OK
 from amodem import main, calib, audio, async
 from amodem.config import bitrates
+from . import version
 
 import os
 import sys
@@ -185,9 +186,11 @@ def create_parser(description, interface):
 
 
 def _main():
-    fmt = ('Audio OFDM MODEM: {0:.1f} kb/s ({1:d}-QAM x {2:d} carriers) '
+    fmt = ('Audio OFDM MODEM v{0:s}: '
+           '{1:.1f} kb/s ({2:d}-QAM x {3:d} carriers) '
            'Fs={3:.1f} kHz')
-    description = fmt.format(config.modem_bps / 1e3, len(config.symbols),
+    description = fmt.format(version.__doc__,
+                             config.modem_bps / 1e3, len(config.symbols),
                              config.Nfreq, config.Fs / 1e3)
     interface = audio.Interface(config=config)
     p = create_parser(description, interface)

amodem/version.py

@@ -0,0 +1 @@
+'1.11'

setup.py

@@ -2,6 +2,16 @@
 from setuptools import setup
 from setuptools.command.test import test as TestCommand
 
+import os
+import ast
+
+def parse_vesrion():
+    cwd = os.path.dirname(__name__)
+    version_file = os.path.join(cwd, 'amodem', 'version.py')
+
+    tree = ast.parse(open(version_file).read())
+    expr, = tree.body
+    return expr.value.s
 
 class PyTest(TestCommand):
 
@@ -16,7 +26,7 @@ class PyTest(TestCommand):
 
 setup(
     name='amodem',
-    version='1.11',
+    version=parse_vesrion(),
     description='Audio Modem Communication Library',
     author='Roman Zeyde',
     author_email='roman.zeyde@gmail.com',