Get rid of the imp library import in Python3 to avoid warnings, fixes #1001

jedi/_compatibility.py

@@ -3,7 +3,6 @@ To ensure compatibility from Python ``2.7`` - ``3.x``, a module has been
 created. Clearly there is huge need to use conforming syntax.
 """
 import sys
-import imp
 import os
 import re
 import pkgutil
@@ -108,6 +107,9 @@ def find_module_py33(string, path=None, loader=None, full_name=None):
 
 
 def find_module_pre_py33(string, path=None, full_name=None):
+    # This import is here, because in other places it will raise a
+    # DeprecationWarning.
+    import imp
     try:
         module_file, module_path, description = imp.find_module(string, path)
         module_type = description[2]
@@ -217,6 +219,16 @@ class ImplicitNSInfo(object):
         self.name = name
         self.paths = paths
 
+
+if is_py3:
+    all_suffixes = importlib.machinery.all_suffixes
+else:
+    def all_suffixes():
+        # Is deprecated and raises a warning in Python 3.6.
+        import imp
+        return [suffix for suffix, _, _ in imp.get_suffixes()]
+
+
 # unicode function
 try:
     unicode = unicode

jedi/evaluate/compiled/subprocess/functions.py

@@ -1,8 +1,8 @@
 import sys
 import os
-import imp
 
-from jedi._compatibility import find_module, cast_path, force_unicode, iter_modules
+from jedi._compatibility import find_module, cast_path, force_unicode, \
+    iter_modules, all_suffixes
 from jedi.evaluate.compiled import access
 from jedi import parser_utils
 
@@ -90,7 +90,7 @@ def _get_init_path(directory_path):
     The __init__ file can be searched in a directory. If found return it, else
     None.
     """
-    for suffix, _, _ in imp.get_suffixes():
+    for suffix in all_suffixes():
         path = os.path.join(directory_path, '__init__' + suffix)
         if os.path.exists(path):
             return path

jedi/evaluate/context/module.py

@@ -1,11 +1,10 @@
-import imp
 import re
 import os
 
 from parso import python_bytes_to_unicode
 
 from jedi.evaluate.cache import evaluator_method_cache
-from jedi._compatibility import iter_modules
+from jedi._compatibility import iter_modules, all_suffixes
 from jedi.evaluate.filters import GlobalNameFilter, ContextNameMixin, \
     AbstractNameDefinition, ParserTreeFilter, DictFilter, MergedFilter
 from jedi.evaluate import compiled
@@ -107,7 +106,7 @@ class ModuleContext(TreeContext):
         :return: The path to the directory of a package. None in case it's not
                  a package.
         """
-        for suffix, _, _ in imp.get_suffixes():
+        for suffix in all_suffixes():
             ending = '__init__' + suffix
             py__file__ = self.py__file__()
             if py__file__ is not None and py__file__.endswith(ending):

jedi/evaluate/sys_path.py

@@ -1,7 +1,6 @@
 import os
-import imp
 
-from jedi._compatibility import unicode, force_unicode
+from jedi._compatibility import unicode, force_unicode, all_suffixes
 from jedi.evaluate.cache import evaluator_method_cache
 from jedi.evaluate.base_context import ContextualizedNode
 from jedi.evaluate.helpers import is_string
@@ -198,7 +197,7 @@ def dotted_path_in_sys_path(sys_path, module_path):
     Returns the dotted path inside a sys.path.
     """
     # First remove the suffix.
-    for suffix, _, _ in imp.get_suffixes():
+    for suffix in all_suffixes():
         if module_path.endswith(suffix):
             module_path = module_path[:-len(suffix)]
         break