Add EuroPython 2015 talk

2015-07-europython/custom_finder.py

@@ -0,0 +1,45 @@
+import sys
+from importlib.machinery import ModuleSpec
+import importlib.abc
+
+class CustomModule:
+    pass
+
+class CustomFinder:
+    def find_spec(self, name, path=None, target=None):
+        print('Finding', name, path, target)
+        if name == 'mymod':
+            return ModuleSpec(name, CustomLoader())
+
+class CustomLoader:
+    def create_module(self, name):
+        print('Creating', name)
+        return CustomModule()
+
+    def exec_module(self, mod):
+        print(vars(mod))
+        print('Executing', mod)
+
+sys.meta_path.insert(0, CustomFinder())
+
+import mymod
+
+print(mymod)
+
+
+
+class CustomImporter(importlib.abc.InspectLoader):
+    def find_spec(self, name, path=None, target=None):
+        print('Finding', name, path, target)
+        if name == 'zzmod':
+            return ModuleSpec(name, self)
+
+    def get_source(self, name):
+        return 'p = 3'
+
+sys.meta_path.insert(0, CustomImporter())
+
+import zzmod
+
+print(zzmod)
+print(zzmod.p)

2015-07-europython/demo/another_directory/package/bar.py

@@ -0,0 +1 @@
+print('importing bar')

2015-07-europython/demo/demo.py

@@ -0,0 +1,4 @@
+import package
+
+import package.foo
+import package.bar

2015-07-europython/demo/package/__init__.py

@@ -0,0 +1,2 @@
+print('importing package')
+__path__.append('./another_directory')

2015-07-europython/demo/package/foo.py

@@ -0,0 +1 @@
+print('importing foo')