Dictionaries & Sets: Write a function that takes in a string parameter key and returns the value of a_dict[key] if key in a_dict OR returns the empty string "" and adds key to a_set if key not in a_dict. - Collections in Python Assignment - Use this assignment in your class!

Collections in Python Assignment

1.Lists: Write code that prints the count of times the string "banana" appears in the list fruits.

2.Lists: Write a function that takes in a list param a_list and returns a pancake scrambled version of the same list, as defined below.

3.Lists & Dictionaries: Write a function that takes in a list parameter a_list and returns a new list that removes all occurrences of duplicate elements from a_list.

4.Lists & Sets: What's the difference between a list and a set in Python?

5.Lists: Write a function that changes the value at given index i of a given list a_list to a given value new_value if the described conditions are met.

6.Lists: What's the difference between the list methods append and extend?

7.Lists: Remove the last element from the list a_list.

8.Lists, Tuples, Sets, & Dictionaries: Identify each of the following data types in Python as mutable or immutable: lists, tuples, sets, dictionaries.

9.Tuples & Lists: What's the difference between a tuple and a list in Python?

10.Tuples: Can tuples contain duplicate values in Python?

11.Tuples: Write a function that takes in a string parameter a_str, and returns a tuple as described below.

12.Tuples & Sets: Give an example of when you may want to use a tuple over a set? Give an example of when you may want to use a set over a tuple?

13.Tuples: Print each element of the tuple a_tup.

14.Sets: What happens if you create a set in Python with duplicate values, such as a_set = {1, 2, 3, 1}?

15.Dictionaries & Sets: Write a function that takes in a string parameter key and returns the value of a_dict[key] if key in a_dict OR returns the empty string "" and adds key to a_set if key not in a_dict.

16.Dictionaries: True or False: Dictionaries in Python can support keys of any type.

17.Dictionaries: Build a dictionary from STDIN of n key/val pairs.

You answeredJUST NOW

Python

You passed all test cases!

STDIN

{"a": 1, "b": 2, "c": 3}
a b c d e

Expected STDOUT

1
2
3

['d', 'e']

Your STDOUT

1
2
3

['d', 'e']

STDIN

{"a": 2}
a b c

Expected STDOUT

2

['b', 'c']

Your STDOUT

2

['b', 'c']

STDIN

{"a": 1, "b": 2, "c": 3}
a b c

Expected STDOUT

1
2
3
[]

Your STDOUT

1
2
3
[]

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Alec KretchJAN 19, 2021, 11:20:33 AM

Python

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Collections in Python Presentation (pages 6-8)

By Alec Kretch (May 27, 2023)

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