python interpreter selector

snaked/plugins/external_tools/__init__.py

@@ -4,6 +4,7 @@
 
 import gtk
 from uxie.utils import join_to_settings_dir
+from snaked.plugins.python.utils import get_executable
 
 tools = []
 
@@ -124,6 +125,7 @@ def run(editor, tool):
     env.update(os.environ)
     env['FILENAME'] = editor.uri
     env['OFFSET'] = str(editor.cursor.get_offset())
+    env['PYTHON'] = get_executable(editor.conf)
 
     def on_finish():
         os.remove(filename)

snaked/plugins/python/__init__.py

@@ -1,6 +1,6 @@
 author = 'Anton Bobrov<bobrov@vl.ru>'
 name = 'Python support'
-desc = 'Autocompletion, definitions navigation and smart ident'
+desc = 'Autocompletion, navigation and smart ident'
 
 import weakref
 
@@ -19,7 +19,10 @@ def init(injector):
     injector.bind('python-editor', 'goto-definition', '_Python#70/Goto _defenition', goto_definition)
     injector.bind('python-editor', 'show-outline', 'Python/Show _outline', open_outline)
 
-    injector.bind('python-editor', 'show-calltip', 'Python/Show calltip', show_calltips)
+    injector.bind('python-editor', 'show-calltip', 'Python/Show call_tip', show_calltips)
+
+    injector.bind_menu('python-editor', 'select-interpreter', 'Python/_Executable',
+        generate_python_executable_menu, resolve_python_executable_menu_entry)
 
     #injector.bind_accel('run-test', '<ctrl>F10', 'Tests', 'Run test in cursor scope', run_test)
     #injector.bind_accel('run-all-tests', '<ctrl><shift>F10', 'Tests',
@@ -28,9 +31,11 @@ def init(injector):
     #injector.bind_accel('toggle-test-panel', '<alt>1', 'Window',
     #    'Toggle test panel', toggle_test_panel)
 
-    from snaked.core.prefs import add_option
-    add_option('PYTHON_EXECUTABLE', 'default',
-        'Path to python executable. Used by test runner and completion framework')
+    from snaked.core.prefs import add_option, add_internal_option
+
+    add_internal_option('PYTHON_EXECUTABLE', 'default')
+    add_option('PYTHON_EXECUTABLES', dict,
+        'Path to python executables. Used by test runner and completion framework')
     add_option('PYTHON_EXECUTABLE_ENV', dict,
         'Python interpreter environment. Used by test runner and completion framework')
     add_option('PYTHON_SUPP_CONFIG', dict, 'Config for supplement')
@@ -237,3 +242,15 @@ def rerun_test(editor):
             get_pytest_runner(editor).run(editor, *last_run_test[0])
         else:
             editor.message('You did not run any test yet', 'warn')
+
+def set_python_executable(editor, name):
+    from .utils import get_executable
+    editor.conf['PYTHON_EXECUTABLE'] = name
+    editor.message('Python executable was set to:\n' + get_executable(editor.conf))
+
+def generate_python_executable_menu(editor):
+    for t in sorted(set(('default', 'python2', 'python3')).union(editor.conf['PYTHON_EXECUTABLES'])):
+        yield t, t, (set_python_executable, (editor, t))
+
+def resolve_python_executable_menu_entry(editor, entry_id):
+    return set_python_executable, (editor, entry_id), entry_id

snaked/plugins/python/plugin.py

@@ -6,6 +6,8 @@
 from snaked.util import lazy_property
 from snaked.signals import connect_external, connect_all
 
+from .utils import get_executable
+
 environments = {}
 configured_projects = {}
 
@@ -22,10 +24,7 @@ def init_completion(self):
 
     @property
     def env(self):
-        executable = self.editor.conf['PYTHON_EXECUTABLE']
-        if executable == 'default':
-            executable = sys.executable
-
+        executable = get_executable(self.editor.conf)
         env = self.editor.conf['PYTHON_EXECUTABLE_ENV']
 
         try:

snaked/plugins/python/utils.py

@@ -0,0 +1,32 @@
+import sys
+import os
+from os.path import exists, join
+
+def which(binary_name):
+    for p in os.environ.get('PATH', '').split(os.pathsep):
+        path = join(p, binary_name)
+        if exists(path):
+            return path
+
+    return None
+
+def get_executable(conf):
+    name = conf['PYTHON_EXECUTABLE']
+
+    try:
+        return conf['PYTHON_EXECUTABLES'][name]
+    except KeyError:
+        pass
+
+    if name == 'default':
+        return sys.executable
+    elif name == 'python2':
+        path = which('python2')
+        if path:
+            return path
+    elif name == 'python3':
+        path = which('python3')
+        if path:
+            return path
+
+    return sys.executable