Disable some features for big annoying libraries like pandas, tensorflow, see #520

jedi/inference/dynamic_params.py

@@ -24,7 +24,7 @@ from jedi.inference.cache import inference_state_method_cache
 from jedi.inference import imports
 from jedi.inference.arguments import TreeArguments
 from jedi.inference.param import get_executed_param_names
-from jedi.inference.helpers import is_stdlib_path
+from jedi.inference.helpers import is_stdlib_path, is_big_annoying_library
 from jedi.inference.utils import to_list
 from jedi.inference.value import instance
 from jedi.inference.base_value import ValueSet, NO_VALUES
@@ -67,6 +67,9 @@ def dynamic_param_lookup(function_value, param_index):
     have to look for all calls to ``func`` to find out what ``foo`` possibly
     is.
     """
+    if is_big_annoying_library(function_value.parent_context):
+        return NO_VALUES
+
     funcdef = function_value.tree_node
 
     if not settings.dynamic_params:

jedi/inference/flow_analysis.py

@@ -1,5 +1,6 @@
 from jedi.parser_utils import get_flow_branch_keyword, is_scope, get_parent_scope
 from jedi.inference.recursion import execution_allowed
+from jedi.inference.helpers import is_big_annoying_library
 
 
 class Status(object):
@@ -42,6 +43,9 @@ def _get_flow_scopes(node):
 
 
 def reachability_check(context, value_scope, node, origin_scope=None):
+    if is_big_annoying_library(context):
+        return UNSURE
+
     first_flow_scope = get_parent_scope(node, include_flows=True)
     if origin_scope is not None:
         origin_flow_scopes = list(_get_flow_scopes(origin_scope))

jedi/inference/helpers.py

@@ -261,3 +261,9 @@ def parse_dotted_names(nodes, is_import_from, until_node=None):
 
 def values_from_qualified_names(inference_state, *names):
     return inference_state.import_module(names[:-1]).py__getattribute__(names[-1])
+
+
+def is_big_annoying_library(context):
+    string_names = context.get_root_context().string_names
+    # Pandas is huge, so just ignore it, because  stuff makes everything slow.
+    return string_names[0] in ('pandas', 'numpy', 'tensorflow', 'matplotlib')

jedi/inference/value/instance.py

@@ -6,7 +6,7 @@ from jedi import debug
 from jedi import settings
 from jedi.inference import compiled
 from jedi.inference.compiled.value import CompiledObjectFilter
-from jedi.inference.helpers import values_from_qualified_names
+from jedi.inference.helpers import values_from_qualified_names, is_big_annoying_library
 from jedi.inference.filters import AbstractFilter, AnonymousFunctionExecutionFilter
 from jedi.inference.names import ValueName, TreeNameDefinition, ParamName, \
     NameWrapper
@@ -237,6 +237,8 @@ class _BaseTreeInstance(AbstractInstanceValue):
         # We are inversing this, because a hand-crafted `__getattribute__`
         # could still call another hand-crafted `__getattr__`, but not the
         # other way around.
+        if is_big_annoying_library(self.parent_context):
+            return NO_VALUES
         names = (self.get_function_slot_names(u'__getattr__')
                  or self.get_function_slot_names(u'__getattribute__'))
         return self.execute_function_slots(names, name)