Allowed importing pyx files from ZIP archives

pyximport/pyximport.py

@@ -47,10 +47,11 @@ the documentation.
 This code is based on the Py2.3+ import protocol as described in PEP 302.
 """
 
-import sys
-import os
 import glob
 import imp
+import os
+import sys
+from zipimport import zipimporter, ZipImportError
 
 mod_name = "pyximport"
 
@@ -300,19 +301,31 @@ class PyxImporter(object):
             paths = package_path
         else:
             paths = sys.path
-        join_path = os.path.join
-        is_file = os.path.isfile
-        is_abs = os.path.isabs
-        abspath = os.path.abspath
-        #is_dir = os.path.isdir
-        sep = os.path.sep
+
         for path in paths:
             if not path:
                 path = os.getcwd()
-            elif not is_abs(path):
-                path = abspath(path)
-            if is_file(path+sep+pyx_module_name):
-                return PyxLoader(fullname, join_path(path, pyx_module_name),
+            elif not os.path.isabs(path):
+                path = os.path.abspath(path)
+
+            try:
+                zi = zipimporter(path)
+                data = zi.get_data(pyx_module_name)
+            except (ZipImportError, IOError):
+                pyx_module_path = os.path.join(path, pyx_module_name)
+            else:
+                # XXX unzip the imported file into the build dir. A bit
+                #     hacky, but it works!
+                if not os.path.exists(self.pyxbuild_dir):
+                    os.makedirs(self.pyxbuild_dir)
+
+                pyx_module_path = os.path.join(self.pyxbuild_dir,
+                                               pyx_module_name)
+                with open(pyx_module_path, "wb") as handle:
+                    handle.write(data)
+
+            if os.path.isfile(pyx_module_path):
+                return PyxLoader(fullname, pyx_module_path,
                                  pyxbuild_dir=self.pyxbuild_dir,
                                  inplace=self.inplace,
                                  language_level=self.language_level)

pyximport/test/test_pyximport.py

 from __future__ import absolute_import, print_function
 
-from pyximport import pyximport; pyximport.install(reload_support=True)
+from pyximport import pyximport
+pyximport.install(reload_support=True)
 
-import os, sys
-import time, shutil
+import os
+import shutil
+import sys
 import tempfile
+import time
+from zipfile import ZipFile
+
+try:
+    from __builtin__ import reload
+except ImportError:
+    from importlib import reload
 
 
 def make_tempdir():
@@ -27,7 +36,7 @@ def on_remove_file_error(func, path, excinfo):
     print("You may want to delete this yourself when you get a chance.")
 
 
-def test():
+def test_with_reload():
     pyximport._test_files = []
     tempdir = make_tempdir()
     sys.path.append(tempdir)
@@ -68,5 +77,27 @@ def make_ext(name, filename):
     remove_tempdir(tempdir)
 
 
-if __name__=="__main__":
-    test()
+def test_zip():
+    try:
+        import test_zip_module
+    except ImportError:
+        pass
+    else:
+        assert False, "test_zip_module already exists"
+
+    fd, zip_path = tempfile.mkstemp(suffix=".zip")
+    os.close(fd)
+    try:
+        with ZipFile(zip_path, "w") as zf:
+            zf.writestr("test_zip_module.pyx", b"x = 42")
+
+        sys.path.insert(0, zip_path)
+        import test_zip_module
+        assert test_zip_module.x == 42
+    finally:
+        os.remove(zip_path)
+
+
+if __name__== "__main__":
+    test_with_reload()
+    test_zip()