сделал явную сортировку и исправил недочеты

VolkovVA/cod.py

@@ -12,11 +12,12 @@ def ll_insert(head, name, phone):
         if current['name'] == name:
             current['phone'] = phone
             return head
+        if current['next'] is None:
+            break
         current = current['next']
         
-        
-    new_node['next'] = head
-    return new_node
+    current['next'] = new_node
+    return head
 
 def ll_find(head, name):
     current = head
@@ -36,21 +37,26 @@ def ll_delete(head, name):
     current = head
     while current['next'] is not None:
         if current['next']['name'] == name:
-            current['next']==current['next']['next']
+            current['next'] = current['next']['next']
             return head
+        current = current['next']
+    return head
+
+
+def sort_records(lst):
+    n = len(lst)
+    for i in range(n):
+        for j in range(0, n-i-1):
+            if lst[j][0] > lst[j + 1][0]:
+                lst[j], lst[j + 1] = lst[j + 1], lst[j]
+    return lst
 
 
 def ll_list_all(head):
     record = []
     current = head
     while current is not None:
-        record.append(current['name'], current['phone'])
+        record += [(current['name'], current['phone'])]
         current = current['next']
-    record.sort(key=lambda x: x[0])
-    return record
-
-    
-            
-    
-        
-    
+    res = sort_records(record)
+    return res