Question

In python, read the file credit_cards.txt into a dictionary with the count of how many cards of each type of card are in the file.

credit_cards.txt contains the following data:

John Smith, Discover

Helen Jones, Visa

Jerry Jones, Master Card

Julio Jones, Diners Club

Fred Jones, Diners Club

Anthony Rendon, Platinum Visa

Juan Soto, Platinum Visa

George Jones, American Express

Brandon Allen, Visa

Henry Beureguard, Visa

Allen Jackson, Master Card

Faith Hill, Platinum Visa

David Smith, Master Card

Samual Jackson, Visa

Donny Jackson, Master Card

Herb Smith, Visa

Ryan Day, American Express

Herm Edwards, American Express

Daisey Fuentes, Master Card

Henry Flood, Visa

Answer 1

Program Code to Copy:

file = open('credit_cards.txt', 'r')
credit_cards = {}
clean_lines = []
for i in file:
    # Filtering out lines that are empty(if line is not blank we take it into another list(clean_lines))
    if i != '\n':
        clean_lines.append(i)

file.close()
for i in clean_lines:
    # Splitting the line based on comma(,) and storing the values
    card_holder_name, card_type = i.split(',')
    # Removing whitespaces from both the ends
    card_type = card_type.strip()
    # If card is in dictionary add one
    if card_type in credit_cards.keys():
        credit_cards[card_type] += 1
    # If card is not in dictionary record this entry as first entry
    else:
        credit_cards[card_type] = 1

print('Number of Credit Cards of each type is given below\n')
for credit_card in credit_cards.keys():
    # Storing value of number of cards of each type
    no_of_cards = credit_cards[credit_card]
    # Printing a message based on number of cards of given day
    if no_of_cards > 1:
        print('There are', no_of_cards, credit_card, 'credit cards')
    else:
        print('There is 1', credit_card, 'credit card')

Code Screenshot:

Output Screenshot: