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POCython AttributeError: 'module' object has no attribute 'declare'
 

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    <p>Compiling .pyx files was working fine but suddenly it started raising error when I type:</p> <pre><code>python setup.py build_ext --inplace </code></pre> <p>I get the error:</p> <pre><code>c:\Python27\cython\helloworld&gt;python setup.py build_ext --inplace running build_ext cythoning hello.pyx to hello.c Traceback (most recent call last): File "setup.py", line 8, in &lt;module&gt; ext_modules = [Extension("hello", ["hello.pyx"])] File "C:\Python27\lib\distutils\core.py", line 152, in setup dist.run_commands() File "C:\Python27\lib\distutils\dist.py", line 953, in run_commands self.run_command(cmd) File "C:\Python27\lib\distutils\dist.py", line 972, in run_command cmd_obj.run() File "C:\Python27\lib\site-packages\Cython\Distutils\build_ext.py", line 163, in run _build_ext.build_ext.run(self) File "C:\Python27\lib\distutils\command\build_ext.py", line 340, in run self.build_extensions() File "C:\Python27\lib\site-packages\Cython\Distutils\build_ext.py", line 170, in build_extensions ext.sources = self.cython_sources(ext.sources, ext) File "C:\Python27\lib\site-packages\Cython\Distutils\build_ext.py", line 317, in cython_sources full_module_name=module_name) File "C:\Python27\lib\site-packages\Cython\Compiler\Main.py", line 605, in com pile return compile_single(source, options, full_module_name) File "C:\Python27\lib\site-packages\Cython\Compiler\Main.py", line 546, in com pile_single return run_pipeline(source, options, full_module_name) File "C:\Python27\lib\site-packages\Cython\Compiler\Main.py", line 386, in run _pipeline import Pipeline File "C:\Python27\lib\site-packages\Cython\Compiler\Pipeline.py", line 7, in &lt; module&gt; from Visitor import CythonTransform File "Visitor.py", line 9, in init Cython.Compiler.Visitor (Cython\Compiler\Vi sitor.c:12838) File "C:\Python27\lib\site-packages\Cython\Compiler\Nodes.py", line 6, in &lt;mod ule&gt; cython.declare(sys=object, os=object, copy=object, AttributeError: 'module' object has no attribute 'declare' </code></pre> <p>I tried running it on a simple .pyx file helloworld:</p> <pre><code>def say_hello_to(name): print "Hello %s!" %name </code></pre> <p>with the setup.py:</p> <pre><code>from distutils.core import setup from distutils.extension import Extension from Cython.Distutils import build_ext setup( name = 'Hello world app', cmdclass = {'build_ext': build_ext}, ext_modules = [Extension("hello", ["hello.pyx"])] ) </code></pre> <p>It already worked several times, something has changed but as I Googled and searched the issue I couldn't find any information. I'm using Python 2.7 64 bits, latest version of Cython and to compile the file I use Windows SDK C/C++ compiler and prepare the environment by running:</p> <pre><code>C:\Program Files\Microsoft SDKs\Windows\v7.0&gt;set DISTUTILS_USE_SDK=1 C:\Program Files\Microsoft SDKs\Windows\v7.0&gt;setenv /x64 /release </code></pre> <p>Any ideas of what might have happened? Tnx in advance!</p>
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    1. COMight be useful to understand what imports do: http://stackoverflow.com/questions/13093665/python-import-statement-semantics
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    2. COTnx for that, I'll research and see if I can find something!
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