Question

我一直在研究这个python问题。我在一个介绍级别课程，我太困了。现在我没有错误，但程序没有打印数据（来自names.txt）或提示我搜索。任何帮助，将不胜感激。 -Thanks！

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

main()做得不多，只打印几行。你会想让它调用你的其他功能。

Answer 2

更正版本的最小更改：

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()

发生了什么变化：

，name_list读取实际上是一个字符串，而不是列表。要获取需要在换行符上分割的行列表（.split('\n')）。之后，您无需从名称
在get_names（）返回后，您需要存储列表并传递给其他函数
new_file使用了name_list，但没有收到它作为参数
try / except块应嵌套在while块

恭喜，它似乎正在发挥作用（：

导入文件，打印数据，搜索然后再打印 - PYTHON

2 个答案: