Python重複結果總是雙重

-1

我還是python的新手。我嘗試使用循環時遇到問題。我有兩個變量，第二個變量總是給我相同的結果。在我的例子，我有一個這樣的數據庫：Python重複結果總是雙重

id | name 
1 porce 
2 cadilcac 
3 honda 
4 toyota

首先，我試圖遍歷id，它的工作好。但是，當我在name試圖循環，結果總是錯的，就像這樣：

1.porce 
2.porce 
3.porce 
4.porce

我想要的結果是：

1.porce 
2.cadilcac 
3.honda 
4.toyota

這是我的代碼：

number = 0 
for id_id in id_number: 
    dd = name # here i call the name by id 
    number += 1 
    print(number) 
    print(dd)

來源

2017-06-20 Stefani Johnsson

告訴你整個代碼。您可能忘記訪問正確的變量 – CIsForCookies

您的意思是保時捷？另外，什麼是'名稱'？ –

對不起，但你的代碼是沒有用的。有兩個變量沒有任何來源，它不清楚你的評論意味着什麼。 –

# using list 
    vehicles = ["Honda", "Porche", "Cadilcac", "Toyota"] 
    number = 0 
    for vehicle in vehicles: 
     number += 1 
     print(number), # ',' is used to print both columns in a single line 
     print(vehicle) 

    # using dictionary 

    vehicles = {1: 'porce',2:'cardilac',3:'honda',4:'toyota'} 
    number=0 
    for id_id in dict: 
      dd= dict[id_id] 
      number += 1 
      print(number), 
      print(dd)

來源

2017-06-20 05:49:05 JyotiGrover

它爲我工作，非常感謝你。 –

爲什麼你沒有直接使用車輛列表循環哥哥，例如：

vehicles = ["Honda", "Porche", "Cadilcac", "Toyota"] 
number = 0 
for vehicle in vehicles: 
    number += 1 
    print(number) 
    print(vehicle)

我希望它能幫助:)

來源

2017-06-20 05:19:25 jennndol

#set counter 
count = 1 

#set list 
my_list = ['porce', 'cadilac', 'honda', 'toyota'] 

#loop through the values and use the counter to assign to the first part of 
# your print statement 
for item in my_list: 

    # this format would be the same as the one that you requested 
    print('{}.{}'.format(count,item)) 
    # increment the counter 
    count += 1 

However, if you directly import from a database, a set of tuples would be a better structure than that of a list. Otherwise, it would be better to employ a dictionary type structure.

來源

2017-06-20 05:35:53

vehicles = ["Honda", "Porche", "Cadilac", "Toyota"] 
number = 0 
for vehicle in vehicles: 
    number += 1 
    print(str(number) + ". " + vehicle)

我希望這是你的意思。

來源

2017-06-20 06:25:01

Python重複結果總是雙重

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