消耗每月能源成本的算法

Question

這運行良好，但不會產生我需要的結果。我的猜測是我在數學中缺少了一些簡單的東西。這是我確定的問題。

bill = 0 
months = 12 
kwhour = .06 
kwhour2 = .08 

for months in range(1, months+1): 

    month_start = int(input('month ' + str(months) + ' starting reading: ')) 
    month_end = int(input('month ' + str(months) + ' ending reading: ')) 

    if month_end <= 1000: 
     output1 = month_end * kwhour 
     output1 += 1 
    else: 
     output2 = month_end * kwhour2 
     output2 += 1 

     bill = output1 + output2 

print('Your yearly bill is: ', bill) 

if bill < 500: 
    print('Thanks for saving so much energy') 

Answer 1

從我所瞭解的情況來看，您在每個月末讀取的值爲energy meter (counter)。你應該計算每個月結束時和每個月初的讀數之間的差異。這是你在那個月消費的東西。然後，每次乘以正確的小時係數kwhour/kwhour2和總和。我仍然不明白他每次都加一個（但他可以解釋）。 你不需要bill += output1 + output2我會添加你不需要添加的東西，這就是爲什麼你添加if condition。

'bill= output1+output2'沒有解決問題。想象一下，如果你循環，並進入案件<=1000（更新輸出1），下一次你進入案件>1000（更新輸出2）。第三次，如果你遇到任何情況（假設要更新'output1'），我們會添加一個過期值'output2'來開票。你應該增加輸出1/2分別在每塊（bill+=output1/bill+=output2）

bill = 0 
    months = 12 
    kwhour = .06 
    kwhour2 = .08 
    output1=0 
    output2=0 

    for m in range(1, months+1): 

     month_start = int(input('month ' + str(m) + ' starting reading: ')) 
     month_end = int(input('month ' + str(m) + ' ending reading: ')) 

     if (month_end-month_start) <= 1000: 
       output1 = (month_end-month_start) * kwhour 
       #output1 += 1 
       bill+=output1 
     else: 
       output2 = (month_end-month_start) * kwhour2 
       #output2 += 1 
       bill+=output2 

     #bill += output1 + output2 You don't need this, u gonna re-adding things 

print('Your yearly bill is: ', bill) 

if bill < 500: 
    print('Thanks for saving so much energy') 

Answer 2

你在每個循環重新分配議案

bill = output1 + output2

嘗試添加代替

bill += output1 + output2

而且你並不真正需要的輸出1和輸出2，直接添加到賬單而不是

if month_end <= 1000: 
    bill += month_end * kwhour 
    bill += 1 # I dont see why you add 1 here 
else: 
    bill += month_end * kwhour2 
    bill += 1 

Answer 3

而不是for months做for month因爲月份已經宣佈變量。你不應該迭代它。第二，更新賬單爲bill=bill+output1+output2

Answer 4

首先，你需要的變量輸出1和輸出2 intialize零，則總的帳單添加應該是如果和其他循環外。您可以改寫這樣的：

bill = 0 
    months = 12 
    kwhour = .06 
    kwhour2 = .08 
    output1=0 
    output2=0 

    for months in range(1, months+1): 

     month_start = int(input('month ' + str(months) + ' starting reading: ')) 
     month_end = int(input('month ' + str(months) + ' ending reading: ')) 

     if month_end <= 1000: 
       output1 = month_end * kwhour 
       output1 += 1 
     else: 
       output2 = month_end * kwhour2 
       output2 += 1 

     bill += output1 + output2 

print('Your yearly bill is: ', bill) 

if bill < 500: 
    print('Thanks for saving so much energy') 

我得到了以下的輸出：

 ('Your yearly bill is: ', 47.03999999999999) 
    Thanks for saving so much energy