get scrapy version from package data

MANIFEST.in

@@ -3,6 +3,7 @@ include AUTHORS
 include INSTALL
 include LICENSE
 include MANIFEST.in
+include scrapy/VERSION
 include scrapy/mime.types
 recursive-include scrapy/templates *
 recursive-include scrapy/tests/sample_data *

Makefile.buildbot

@@ -14,5 +14,5 @@ build:
 	python extras/makedeb.py build
 
 clean:
-	git checkout debian scrapy/__init__.py
+	git checkout debian scrapy/VERSION
 	git clean -dfq

extras/makedeb.py

@@ -1,5 +1,6 @@
 import sys, os, glob, shutil
 from subprocess import check_call
+from scrapy import version_info
 
 def build(suffix):
     for ifn in glob.glob("debian/scrapy.*"):
@@ -29,7 +30,7 @@ def clean(suffix):
 
 def main():
     cmd = sys.argv[1]
-    suffix = '%s.%s' % __import__('scrapy').version_info[:2]
+    suffix = '%s.%s' % version_info[:2]
     if cmd == 'build':
         build(suffix)
     elif cmd == 'clean':

scrapy/VERSION

@@ -0,0 +1 @@
+0.17.0

scrapy/__init__.py

@@ -1,9 +1,9 @@
 """
 Scrapy - a screen scraping framework written in Python
 """
-
-version_info = (0, 17, 0)
-__version__ = "0.17.0"
+import pkgutil
+__version__ = pkgutil.get_data(__package__, 'VERSION').strip()
+version_info = tuple(__version__.split('.')[:3])
 
 import sys, os, warnings
 

setup.py

@@ -82,9 +82,11 @@ if os.name == 'nt':
 
 if os.environ.get('SCRAPY_VERSION_FROM_GIT'):
     v = Popen("git describe", shell=True, stdout=PIPE).communicate()[0]
-    with open('scrapy/__init__.py', 'a') as f:
-        f.write("\n__version__ = '%s'" % v.strip())
-version = __import__('scrapy').__version__
+    with open('scrapy/VERSION', 'w+') as f:
+        f.write(v.strip())
+with open(os.path.join(os.path.dirname(__file__), 'scrapy/VERSION')) as f:
+    version = f.read().strip()
+
 
 setup_args = {
     'name': 'Scrapy',