导入文件，打印数据，搜索然后再打印 - PYTHON

Question

我一直在研究这个python问题一段时间。我在一个初级班，我很困难。现在我没有收到任何错误，但是程序没有打印数据（来自names.txt）或者提示我搜索。任何帮助，将不胜感激。 -谢谢！

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

修正版本最低变动：

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() 

是什么改变：

• 在get_names的NAME_LIST阅读实际上是一个字符串，而不是一个列表。要获得需要拆分换行符的行列表（.split('\n')）。之后，你不需要从名称中删除换行符

• get_names（）返回之后，你需要存储的列表，并传递给其他功能

• NEW_FILE使用name_list中，但没有接受它作为参数

• 在try/except块应在当块嵌套

恭喜，它似乎是工作（：

Answer 2

main()不会做太多，它只是打印几行。你会想让它叫你的其他功能。