導入文件，打印數據，搜索然後再打印 - PYTHON

Question

我一直在研究這個python問題一段時間。我在一個初級班，我很困難。現在我沒有收到任何錯誤，但是程序沒有打印數據（來自names.txt）或者提示我搜索。任何幫助，將不勝感激。 -謝謝！

def main(): 

    print("Last, \tFirst") 
    print 

    name_list = get_names() 
    print_list(name_list) 
    new_file(name_list) 
    search_list(name_list) 

def get_names(): 
    # open the data file 
    infile = open('names.txt', 'r') 

    # read all the lines from the file 
    name_list = infile.read().split('\n') 

    #close the input file 
    infile.close() 



    return(name_list) 

#def print list 
def print_list(name_list): 
    #print the data 
    for name in name_list: 
     print (name) 
    return(name) 

#def new_file 
def new_file(name_list): 
    outfile = open('sorted_names.txt' ,'w') 
    for item in name_list: 
     outfile.write(item + '\n') 

    outfile.close() 

#def search_list 
def search_list(name_list): 
    again = 'Y' 
    while again == 'Y': 
     name = input("What name would you like to look for? :") 
     try: 
      name_index = name_list.index(name) 
      print (name), (" was found in the list at index point: "), name_index 

     except ValueError as err: 
      print (name), (" was not found in the list.") 

      print ("Would you like to search for another name?") 
      again = input("Would you like to run the program again? [y/n]") == 'y' 


# execute the main function 
main() 

Answer 1

修正版本最低變動：

def main(): 

    print("Last, \tFirst") 
    print 

    name_list = get_names() 
    print_list(name_list) 
    new_file(name_list) 
    search_list(name_list) 

def get_names(): 
    # open the data file 
    infile = open('names.txt', 'r') 

    # read all the lines from the file 
    name_list = infile.read().split('\n') 

    #close the input file 
    infile.close() 

    #print data read into memory 
    print(name_list) 

    return(name_list) 

#def print list 
def print_list(name_list): 
    #print the data 
    for name in name_list: 
     print (name) 
    return(name) 

#def new_file 
def new_file(name_list): 
    outfile = open('sorted_names.txt' ,'w') 
    for item in name_list: 
     outfile.write(item + '\n') 

    outfile.close() 

#def search_list 
def search_list(name_list): 
    again = 'Y' 
    while again.upper()== 'Y': 
     name = raw_input("What name would you like to look for? :") 
     try: 
      name_index = name_list.index(name) 
      print (name), (" was found in the list at index point: "), name_index 

     except ValueError as err: 
      print (name), (" was not found in the list.") 

      print ("Would you like to search for another name?") 
      again = raw_input("Would you like to run the program again? [y/n]") == 'y' 


# execute the main function 
main() 

是什麼改變：

• 在get_names的NAME_LIST閱讀實際上是一個字符串，而不是一個列表。要獲得需要拆分換行符的行列表（.split('\n')）。之後，你不需要從名稱中刪除換行符

• get_names（）返回之後，你需要存儲的列表，並傳遞給其他功能

• NEW_FILE使用name_list中，但沒有接受它作爲參數

• 在try/except塊應在當塊嵌套

恭喜，它似乎是工作（：

Answer 2

main()不會做太多，它只是打印幾行。你會想讓它叫你的其他功能。