Python Quiz -> Fetch Highest Buyer List Store Wise

find-highest-buyer-list-store-wise.py

import sys

def getCleanEntry(line):
    entry = line.strip('\n').split(',')
    return entry

def getPurchaseDetails(entry):
    storeName = entry[1].strip()
    customerName = entry[0].strip()
    amount = int(entry[4].strip().replace("Rs ", ""))
    return {
       "storeName": storeName, 
       "customerName": customerName, 
       "amount": amount
    }

def getBasicPurchaseDetails(purchaseDetails):
    return {
        "customerName": purchaseDetails['customerName'],
        "amount": purchaseDetails['amount']
    }

def appendIfNotExists(array, item):
    if item not in array:
        array.append(item)
    return array
    

def run():
    lines = []
    storeHash = {}
    customerList = []
    for line in sys.stdin:
        purchaseDetails = getPurchaseDetails(getCleanEntry(line))
        storeName, customerName, amount  = purchaseDetails['storeName'], purchaseDetails['customerName'], purchaseDetails['amount']
        currentBasicPurchaseDetails = getBasicPurchaseDetails(purchaseDetails)
        
        if storeName not in storeHash:
            storeHash[storeName] = []
            storeHash[storeName].append(currentBasicPurchaseDetails)
            customerList = appendIfNotExists(customerList, customerName)
            continue
        
        lastHighestPurchase = storeHash[storeName][0]
        lastPurchaseAmount = lastHighestPurchase['amount']
        if amount > lastPurchaseAmount:
            storeHash[storeName] = []
            storeHash[storeName].append(currentBasicPurchaseDetails)
            customerList = appendIfNotExists(customerList, customerName)
            for highestPurchase in storeHash[storeName]:
                customerList.remove(highestPurchase['customerName'])
            continue
        
        if amount == lastPurchaseAmount:
            customerList = appendIfNotExists(customerList, customerName)
            storeHash[storeName].append(currentBasicPurchaseDetails)
            continue
        
    for customerName in customerList:
        print(customerName)


if __name__ == '__main__':
    run()

sample-store-sell.txt

Rajan Patil, Aundh, 1, Phone Cover, Rs 170, Cash
Mohit Gupta, Baner, 1, Samsung Battery, Rs 900, Credit Card
Rajan Patil, Aundh, 3, Samsung Battery, Rs 1000, Cash
Nina Kothari, Baner, 4, Earphones, Rs 500, Credit Card
T Sunitha, Shivajinagar, 5, Earphones, Rs 550, Credit Card
Rohan Gade, Aundh, 10, Motorola Battery, Rs 1000, Credit Card
Rajan Patil, Shivajinagar, 21, Earphones, Rs 550, Credit Card
Rajan Patil, Aundh, 22, USB Cable, Rs 150, UPI
Meena Kothari, Baner, 23, USB Cable, Rs 100, Cash
Nina Kothari, Baner, 24, USB Cable, Rs 200, UPI
Mohit Gupta, Baner, 25, USB Cable, Rs 150, UPI