Fix a crash in consider-using-enumerate when encountering range() without arguments

Close #3735

Author: PCManticore

ChangeLog

@@ -95,6 +95,10 @@ 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?
 ===========================
 

pylint/checkers/refactoring/recommendation_checker.py

@@ -67,6 +67,8 @@ def visit_for(self, node):
             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

tests/functional/c/consider_using_enumerate.py

@@ -66,3 +66,8 @@ def __iter__(self):
         # 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)