Fix a crash in `consider-using-enumerate` when encountering `range()` without argumentsfix-range-without-args-crash

Close #3735

3 files changed, 11 insertions, 0 deletions

diff --git a/ChangeLog b/ChangeLog
index 97ebf5f55..a01bc0b89 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -91,6 +91,10 @@ Release date: TBA
 
 * Removed incorrect deprecation of ``inspect.getfullargspec``
 
+* Fix a crash in `consider-using-enumerate` when encountering `range()` without arguments
+
+  Close #3735
+
 What's New in Pylint 2.6.0?
 ===========================
 
diff --git a/pylint/checkers/refactoring/recommendation_checker.py b/pylint/checkers/refactoring/recommendation_checker.py
index 0ca907f32..1617c934c 100644
--- a/pylint/checkers/refactoring/recommendation_checker.py
+++ b/pylint/checkers/refactoring/recommendation_checker.py
@@ -67,6 +67,8 @@ class RecommendationChecker(checkers.BaseChecker):
             return
         if not self._is_builtin(node.iter.func, "range"):
             return
+        if not node.iter.args:
+            return
         is_constant_zero = (
             isinstance(node.iter.args[0], astroid.Const)
             and node.iter.args[0].value == 0
diff --git a/tests/functional/c/consider_using_enumerate.py b/tests/functional/c/consider_using_enumerate.py
index cff00aeec..2ac382b18 100644
--- a/tests/functional/c/consider_using_enumerate.py
+++ b/tests/functional/c/consider_using_enumerate.py
@@ -66,3 +66,8 @@ class Good(object):
         # Should not suggest enumerate on self

         for i in range(len(self)):

             yield self[i]

+

+

+def does_not_crash_on_range_without_args():

+    for elem in range():

+        print(elem)