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Python - More Data Structures: Set, Dictionary

In this learning experience, I learnt the following:

  • What are sets and how to use them
  • What are the most common methods of set and how to use them
  • When to use sets versus lists
  • How to iterate into a set
  • What are dictionaries and how to use them
  • When to use dictionaries versus lists or sets
  • What is a key in a dictionary
  • How to iterate over a dictionary
  • What is a lambda function
  • What are the map, reduce and filter functions

Pycache 📁

The pycache directory is a directory created by Python3 to store compiled bytecode files, which are generated to improve the performance of Python code execution.

Function Prototypes 🛠️

Prototypes for functions written in this project:

File Prototype
0-square_matrix_simple.py def square_matrix_simple(matrix=[]):
1-search_replace.py def search_replace(my_list, search, replace):
2-uniq_add.py def uniq_add(my_list=[]):
3-common_elements.py def common_elements(set_1, set_2):
4-only_diff_elements.py def only_diff_elements(set_1, set_2):
5-number_keys.py def number_keys(a_dictionary):
6-print_sorted_dictionary.py def print_sorted_dictionary(a_dictionary):
7-update_dictionary.py def update_dictionary(a_dictionary, key, value):
8-simple_delete.py def simple_delete(a_dictionary, key=""):
9-multiply_by_2.py def multiply_by_2(a_dictionary):
10-best_score.py def best_score(a_dictionary):
11-multiply_list_map.py def multiply_list_map(my_list=[], number=0):
12-roman_to_int.py def roman_to_int(roman_string):
100-weight_average.py def weight_average(my_list=[]):
101-square_matrix_map.py def square_matrix_map(matrix=[]):
102-complex_delete.py def complex_delete(a_dictionary, value):

Tasks 📃

Task-0: The 0-square_matrix_simple.py file contains a function that computes the square value of all integers of a matrix.

Task-1: The 1-search_replace.py file contains a function that replaces all occurrences of an element by another in a new list.

Task-2: The 2-uniq_add.py file contains a function that adds all unique integers in a list (only once for each integer).

Task-3: The 3-common_elements.py contains a function that returns a set of common elements in two sets.

Task-4: The 4-only_diff_elements.py contain a function that returns a set of all elements present in only one set.

Task-5: The 5-number_keys.py file contains a function that returns the number of keys in a dictionary.

Task-6: The 6-print_sorted_dictionary.py file contains a function that prints a dictionary by ordered keys.

Task-7: The 7-update_dictionary.py file contains a function that replaces or adds key/value in a dictionary.

Task-8: The 8-simple_delete.py file contains a function that deletes a key in a dictionary.

Task-9: The 9-multiply_by_2.py file contains a function that returns a new dictionary with all values multiplied by 2

Task-10: The 10-best_score.py file contains a function that returns a key with the biggest integer value.

Task-11: The 11-multiply_list_map.py file contains a function that returns a list with all values multiplied by a number without using any loops.

Task-12: The 12-roman_to_int.py file contains a function that converts a Roman numeral to an integer.

Task-13: The 100-weight_average.py file contains a function that returns the weighted average of all integers tuple (<score>, <weight>)

Task-14: The 101-square_matrix_map.py file contains a function that computes the square value of all integers of a matrix using map

Task-15: The 102-complex_delete.py file contains a function that deletes keys with a specific value in a dictionary.