Create a Program to Implement List and Tuples in Python Assignment Solution
July 01, 2024
Professor Daniel
🇨🇦 Canada
Python
l Professor Daniel Mitchell is an esteemed faculty member with a Master's degree in Software Engineering from a prestigious university in Canada. He has successfully completed over 700 assignments focusing on Python file operations. Professor Mitchell's expertise lies in file system design, secure file handling practices, and integrating file operations with database systems. His insights into binary file processing and path management make him a valuable resource for students seeking comprehensive Python file handling solutions.
Key Topics
- Instructions
- Requirements and Specifications
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Instructions
Objective
Write a python assignment program to implement list and tuples.
Requirements and Specifications
Source Code
# -*- coding: utf-8 -*-
"""
Created on Tue Oct 25 19:15:40 2022
@author: Owner
"""
import csv
from operator import itemgetter
NAME = 0
ELEMENT = 1
WEAPON = 2
RARITY = 3
REGION = 4
MENU = "\nWelcome to Genshin Impact Character Directory\n\
Choose one of below options:\n\
1. Get all available regions\n\
2. Filter characters by a certain criteria\n\
3. Filter characters by element, weapon, and rarity\n\
4. Quit the program\n\
Enter option: "
INVALID_INPUT = "\nInvalid input"
CRITERIA_INPUT = "\nChoose the following criteria\n\
1. Element\n\
2. Weapon\n\
3. Rarity\n\
4. Region\n\
Enter criteria number: "
VALUE_INPUT = "\nEnter value: "
ELEMENT_INPUT = "\nEnter element: "
WEAPON_INPUT = "\nEnter weapon: "
RARITY_INPUT = "\nEnter rarity: "
HEADER_FORMAT = "\n{:20s}{:10s}{:10s}{:<10s}{:25s}"
ROW_FORMAT = "{:20s}{:10s}{:10s}{:<10d}{:25s}"
def open_file():
'''
Prompts the user to input a file name to open
Returns: file pointer
'''
input_file = input("Enter file name: ")
while True:
try:
open_file = open(input_file)
return open_file
except FileNotFoundError:
print("\nError opening file. Please try again.")
input_file = input("Enter file name: ")
def read_file(fp):
'''
Reads the csv file
Value: file
Returns: list of tuples
'''
files = csv.reader(fp)
skip_header = next(files,None)
attributes_list = []
for line in files:
name = str(line[0])
rarity = int(line[1])
element = str(line[2])
weapon = str(line[3])
region = str(line[4]).strip()
region = region if region else None
attributes_tuple = (name , element , weapon , rarity , region)
attributes_list.append(attributes_tuple)
return attributes_list
def get_characters_by_criterion (list_of_tuples, criteria, value):
'''
Retrieve the characters that match a certain criteria
list_of_tuples: --
criteria: the index of a criteria in a character
value: type value
'''
criterion_list = [] #part1
for character in list_of_tuples:
if character[criteria] is None: #part2
continue #skips the following lines of code
elif criteria == RARITY: #part3
if character[criteria] == value and type(character[criteria]) is int and type(value) is int:
criterion_list.append(character)
else: #part4
if (value.lower() == character[criteria].lower()) and type(character[criteria]) is str and type(value) is str:
criterion_list.append(character)
return criterion_list
def get_characters_by_criteria(master_list, element, weapon, rarity):
'''
Returns a list of tuples filtered with parameters
master_list: list of tuples
element: argument for get_characters_by_criterion
weapon: argument for get_characters_by_criterion
rarity: argument for get_characters_by_criterion
'''
criteria_one = get_characters_by_criterion(master_list , ELEMENT , element)
criteria_two = get_characters_by_criterion(criteria_one , WEAPON , weapon)
criteria_three = get_characters_by_criterion(criteria_two , RARITY, rarity)
return criteria_three
def get_region_list (master_list):
'''
Retrieve available regions into a list
Value: tuples
Returns: sorted list
'''
reg_list = []
for line in master_list:
reg = line[4]
if reg != None:
if reg in reg_list:
continue
else:
reg_list.append(reg)
reg_list_sorted = sorted(reg_list)
return reg_list_sorted
def sort_characters (list_of_tuples):
'''
Creates a new sorted list
Value: tuples
Returns: sorted tuples
'''
return sorted(list_of_tuples, key=itemgetter(3) , reverse = True)
def display_characters (list_of_tuples):
'''
Displays the characters with information
Value: tuples
Returns: --
'''
if list_of_tuples == []:
print("\nNothing to print.")
else:
print(HEADER_FORMAT.format("Character", "Element", "Weapon", "Rarity", "Region"))
for line in list_of_tuples:
region = line[4]
if region == None:
print(ROW_FORMAT.format( line[0] , line[1] , line[2] , line[3] , 'N/A' ))
else:
print(ROW_FORMAT.format( line[0] , line[1] , line[2] , line[3] , region ))
def get_option():
'''
Prompt for input
Value: --
Returns: input selected
'''
while True:
menu_input = input(MENU)
try:
menu_input_int = int(menu_input)
if 1 <= menu_input_int <= 4:
return menu_input_int
else:
print("\nNothing to print.")
except ValueError:
print("\nNothing to print.")
def main():
data = read_file(open_file())
menu_input = get_option()
while menu_input != 4:
if menu_input == 1:
print("\nRegions:")
regions = get_region_list(data)
print(", ".join(regions) )
if menu_input == 2:
input_criteria = input(CRITERIA_INPUT)
input_value = ""
try:
input_criteria_int = int(input_criteria)
if not (1 <= input_criteria_int <= 4):
print(INVALID_INPUT)
input_criteria = input(CRITERIA_INPUT)
except ValueError:
print(INVALID_INPUT)
input_criteria = input(CRITERIA_INPUT)
input_value = input(VALUE_INPUT)
if input_criteria_int == RARITY:
try:
input_value = int(input_value)
except:
print(INVALID_INPUT)
menu_input = get_option()
continue
character_criterion = get_characters_by_criterion(data, input_criteria_int, input_value)
character_sort = sort_characters(character_criterion)
display_characters(character_sort)
if menu_input == 3:
element = (input(ELEMENT_INPUT)).upper()
weapon = (input(WEAPON_INPUT)).upper()
rarity = input(RARITY_INPUT)
while True:
try:
rarity = int(rarity)
break
except ValueError:
print(INVALID_INPUT)
rarity = input(RARITY_INPUT)
character_criteria = get_characters_by_criteria(data, element, weapon, rarity)
character_sort = sort_characters(character_criteria) #iii.
display_characters(character_sort)
menu_input = get_option()
# DO NOT CHANGE THESE TWO LINES
#These two lines allow this program to be imported into other code
# such as our function_test code allowing other functions to be run
# and tested without 'main' running. However, when this program is
# run alone, 'main' will execute.
if __name__ == "__main__":
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