I'm running Python 3.4.3 and Cython 0.23.4 under Gentoo Linux. I think I've found a bug in Cython. Steps to reproduce: ## test.py ## import pyximport pyximport.install() import mymodule print(mymodule.get(1, 2)) ## mymodule.pyx ## cdef int[2][3] arr = ( (0, 1, 2), (3, 4, 5) ) cpdef int get(int i, int j): return arr[i][j] #### `python test.py` fails with the following traceback: Traceback (most recent call last): File "/usr/lib64/python3.4/site-packages/pyximport/pyximport.py", line 209, in load_module inplace=build_inplace, language_level=language_level) File "/usr/lib64/python3.4/site-packages/pyximport/pyximport.py", line 186, in build_module reload_support=pyxargs.reload_support) File "/usr/lib64/python3.4/site-packages/pyximport/pyxbuild.py", line 100, in pyx_to_dll dist.run_commands() File "/usr/lib64/python3.4/distutils/dist.py", line 955, in run_commands self.run_command(cmd) File "/usr/lib64/python3.4/distutils/dist.py", line 974, in run_command cmd_obj.run() File "/usr/lib64/python3.4/site-packages/Cython/Distutils/build_ext.py", line 164, in run _build_ext.build_ext.run(self) File "/usr/lib64/python3.4/distutils/command/build_ext.py", line 339, in run self.build_extensions() File "/usr/lib64/python3.4/site-packages/Cython/Distutils/build_ext.py", line 171, in build_extensions ext.sources = self.cython_sources(ext.sources, ext) File "/usr/lib64/python3.4/site-packages/Cython/Distutils/build_ext.py", line 320, in cython_sources full_module_name=module_name) File "/usr/lib64/python3.4/site-packages/Cython/Compiler/Main.py", line 677, in compile return compile_single(source, options, full_module_name) File "/usr/lib64/python3.4/site-packages/Cython/Compiler/Main.py", line 630, in compile_single return run_pipeline(source, options, full_module_name) File "/usr/lib64/python3.4/site-packages/Cython/Compiler/Main.py", line 487, in run_pipeline err, enddata = Pipeline.run_pipeline(pipeline, source) File "/usr/lib64/python3.4/site-packages/Cython/Compiler/Pipeline.py", line 328, in run_pipeline data = phase(data) File "/usr/lib64/python3.4/site-packages/Cython/Compiler/Pipeline.py", line 53, in generate_pyx_code_stage module_node.process_implementation(options, result) File "/usr/lib64/python3.4/site-packages/Cython/Compiler/ModuleNode.py", line 118, in process_implementation self.generate_c_code(env, options, result) File "/usr/lib64/python3.4/site-packages/Cython/Compiler/ModuleNode.py", line 348, in generate_c_code self.generate_module_init_func(modules[:-1], env, globalstate['init_module']) File "/usr/lib64/python3.4/site-packages/Cython/Compiler/ModuleNode.py", line 2173, in generate_module_init_func self.body.generate_execution_code(code) File "/usr/lib64/python3.4/site-packages/Cython/Compiler/Nodes.py", line 442, in generate_execution_code stat.generate_execution_code(code) File "/usr/lib64/python3.4/site-packages/Cython/Compiler/UtilNodes.py", line 334, in generate_execution_code self.body.generate_execution_code(code) File "/usr/lib64/python3.4/site-packages/Cython/Compiler/Nodes.py", line 5223, in generate_execution_code stat.generate_rhs_evaluation_code(code) AttributeError: 'LetNode' object has no attribute 'generate_rhs_evaluation_code' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/home/pastafarianist/ownCloud/dev/sandbox/cython/test.py", line 4, in <module> import mymodule File "/usr/lib64/python3.4/site-packages/pyximport/pyximport.py", line 435, in load_module language_level=self.language_level) File "/usr/lib64/python3.4/site-packages/pyximport/pyximport.py", line 225, in load_module raise exc.with_traceback(tb) File "/usr/lib64/python3.4/site-packages/pyximport/pyximport.py", line 209, in load_module inplace=build_inplace, language_level=language_level) File "/usr/lib64/python3.4/site-packages/pyximport/pyximport.py", line 186, in build_module reload_support=pyxargs.reload_support) File "/usr/lib64/python3.4/site-packages/pyximport/pyxbuild.py", line 100, in pyx_to_dll dist.run_commands() File "/usr/lib64/python3.4/distutils/dist.py", line 955, in run_commands self.run_command(cmd) File "/usr/lib64/python3.4/distutils/dist.py", line 974, in run_command cmd_obj.run() File "/usr/lib64/python3.4/site-packages/Cython/Distutils/build_ext.py", line 164, in run _build_ext.build_ext.run(self) File "/usr/lib64/python3.4/distutils/command/build_ext.py", line 339, in run self.build_extensions() File "/usr/lib64/python3.4/site-packages/Cython/Distutils/build_ext.py", line 171, in build_extensions ext.sources = self.cython_sources(ext.sources, ext) File "/usr/lib64/python3.4/site-packages/Cython/Distutils/build_ext.py", line 320, in cython_sources full_module_name=module_name) File "/usr/lib64/python3.4/site-packages/Cython/Compiler/Main.py", line 677, in compile return compile_single(source, options, full_module_name) File "/usr/lib64/python3.4/site-packages/Cython/Compiler/Main.py", line 630, in compile_single return run_pipeline(source, options, full_module_name) File "/usr/lib64/python3.4/site-packages/Cython/Compiler/Main.py", line 487, in run_pipeline err, enddata = Pipeline.run_pipeline(pipeline, source) File "/usr/lib64/python3.4/site-packages/Cython/Compiler/Pipeline.py", line 328, in run_pipeline data = phase(data) File "/usr/lib64/python3.4/site-packages/Cython/Compiler/Pipeline.py", line 53, in generate_pyx_code_stage module_node.process_implementation(options, result) File "/usr/lib64/python3.4/site-packages/Cython/Compiler/ModuleNode.py", line 118, in process_implementation self.generate_c_code(env, options, result) File "/usr/lib64/python3.4/site-packages/Cython/Compiler/ModuleNode.py", line 348, in generate_c_code self.generate_module_init_func(modules[:-1], env, globalstate['init_module']) File "/usr/lib64/python3.4/site-packages/Cython/Compiler/ModuleNode.py", line 2173, in generate_module_init_func self.body.generate_execution_code(code) File "/usr/lib64/python3.4/site-packages/Cython/Compiler/Nodes.py", line 442, in generate_execution_code stat.generate_execution_code(code) File "/usr/lib64/python3.4/site-packages/Cython/Compiler/UtilNodes.py", line 334, in generate_execution_code self.body.generate_execution_code(code) File "/usr/lib64/python3.4/site-packages/Cython/Compiler/Nodes.py", line 5223, in generate_execution_code stat.generate_rhs_evaluation_code(code) ImportError: Building module mymodule failed: ["AttributeError: 'LetNode' object has no attribute 'generate_rhs_evaluation_code'\n"]