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#!/usr/bin/env python3
# https://www.freecodecamp.org/learn/python-v9/review-dictionaries-and-sets/review-dictionaries-and-sets
import sys
def ft():
print("=== Inventory System Analysis ===")
# check for when there are no params given
if len(sys.argv) < 2:
print("Enter items following this format: <item_name>:<quantity>")
return
# initialize dictionary
inventory = {}
# init list to check for duplicates
seen = []
for arg in sys.argv[1:]:
try:
item, quantity = arg.split(':')
# print redundant item.s
if item in seen:
print(f"Redundant item '{item}' - discaring")
else:
seen.append(item)
try:
# check that quantities are int
int(quantity)
if int(quantity) < 0:
raise ValueError("quantity cannot be negative")
except ValueError as err:
print(f"Quantity error for '{item}': {err}")
else:
# populate dict
inventory[item] = quantity
except ValueError:
print(f"Error - invalid parameter '{arg.rstrip()}'")
if arg == sys.argv[-1] and arg == sys.argv[1]:
return
# check for when there are many invalid param and no valid params
if not seen:
return
if not inventory:
return
print(f"Got inventory: {inventory}")
item_list = []
for item in inventory.keys():
item_list.append(item)
print(f"Item list: {item_list}")
total_quantity = 0
for quantity in inventory.values():
total_quantity += int(quantity)
print(f"Total quantity for the "
f"{len(inventory.values())} items: {total_quantity}")
# compute percentages
for key in inventory:
per_of_total = round(100 * (int(inventory[key]) / total_quantity), 1)
print(f"Item {key} represents {per_of_total}%")
# look for item with max quantity
max_value = 0
max_key = item_list[0]
for key in inventory:
if max_value == 0:
max_value = int(inventory[key])
if int(inventory[key]) > max_value:
max_value = int(inventory[key])
max_key = key
print(f"Item most abundant: {max_key} with quantity {max_value}")
# look for item with min quantity
min_value = 0
min_key = item_list[0]
for key in inventory:
if min_value == 0:
min_value = int(inventory[key])
if int(inventory[key]) < min_value:
min_value = int(inventory[key])
min_key = key
print(f"Item least abundant: {min_key} with quantity {min_value}")
inventory.update({'magic item': '1'})
print(inventory)
if __name__ == "__main__":
ft()
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