Python 100练习题 Day5

Question 16

Question:
Use a list comprehension to square each odd number in a list. The list is input by a sequence of comma-separated numbers. >Suppose the following input is supplied to the program:

1,2,3,4,5,6,7,8,9
Then, the output should be:

1,9,25,49,81
Hints:
In case of input data being supplied to the question, it should be assumed to be a console input.

num = input().split(",")
odd_num = []
for i in range(0,len(num)):
    if not int(i)%2==0:
        odd_num.append(i*i)
print(odd_num)

Question 17

Question:
Write a program that computes the net amount of a bank account based a transaction log from console input. The transaction log format is shown as following:

D 100
W 200
D means deposit while W means withdrawal.
Suppose the following input is supplied to the program:

D 300
D 300
W 200
D 100
Then, the output should be:

500
Hints:
In case of input data being supplied to the question, it should be assumed to be a console input.

money = 0
while 1:
    trans = input().split(' ')
    if trans[0] == 'D':
        money = money + int(trans[1])
    elif trans[0] == 'W':
        money = money - int(trans[1])
    elif input() == '':
        break
    print(f'Your current balance is: {money}')