chapter 13: Collecting All Sorts of Data 13.1 Understanding Collections 13.2 Working with Tuples 13.3 Working with Dictionaries 13.4 Creating Stacks Using Lists 13.5 Working with queues 13.6 Working with deques Algorithms Train 01-01.DequeData.py 02.check_palindrome_string2.py 03.accept_hyphen_separated.py 04.calculate_the_number.py 05.form_New_String.py 06.count_the_occurrences.py 07.check_substring.py 08.ListStack.py 09.PythonSwitch.py 10.QueueData.py