Question

这是我的代码;

Import os
#hard code the path to the external file
external_file = 'names.txt'
username = 'testuser'# Our hardcoded name

#if file doesn't exists, create a new file
if not os.path.exists(external_file):
    #Ask the user's name
    name = raw_input("What's your name?")
    with open(external_file, "a") as f: # using "a" will append to the file
        f.write(name)# Write the name to names.txt
        f.write("\n")
        f.close()
else:
    #if file exists, use it to load name, else ask user
    with open(external_file, "r+") as f:# r+ open a file for reading & writing
        lines = f.read().split('\n') # split the names 
        print lines
        if username in lines: #Check if the file has any username as 'testuser'
            print "Hi {}".format(username)
        else: # If there is no username as 'testuser' then ask for a name
            name = raw_input("What's your name?")
            f.seek(0,2) # Resolves an issue in Windows
            f.write(name)# Write the name to names.txt
            f.write("\n")
            f.close()

这是一个很好的工作代码，但我不希望它显示一个名单列表，并要求你选择。我希望它只存储一个名称，并在每次打开程序时绘制该名称，除非你另有说明 E.g;

IsName = raw_input("That is your name, right?")
If 'no' in IsName:

然后更改文件名称的代码

Answer 1

我已使用评论修改了您的代码。这是你想要的吗？其工作原理如下：

代码首先检查是否有名为names.txt的文件，如果没有这样的文件，它将创建一个新文件names.txt，然后询问名称。然后它会将此名称保存到文件names.txt
如果文件names.txt已经存在，那么它将打开该文件并检查它是否包含我们的testuser硬编码名称。如果它包含testuser，那么它会说：

嗨testuser 这是你的名字吗？

如果用户输入no，则会询问新名称并将其写入names.txt文件。如果names.txt文件存在并且它不包含硬编码名称testuser，则程序将询问名称并将其写入names.txt文件。

<强>代码：

import os
#hard code the path to the external file
external_file = 'names.txt'
username = 'testuser'#Our hardcoded name

#if file doesn' exists, create a new file
if not os.path.exists(external_file):
    #Ask the user's name
    name = raw_input("What's your name?")
    with open(external_file, "a") as f: #using "a" will append to the file
        f.write(name)# Write the name to names.txt
        f.write("\n")
        f.close()
else:
    #if file exists, use it to load name, else ask user
    with open(external_file, "r") as f:#r+ opens a file for reading & writing
        lines = f.read().split('\n') # split the names 
        f.close()
    if username in lines: #Check if the file has any username as 'testuser'
        print "Hi {}".format(username)
        response = raw_input("Is this your name?")
        if 'no' in response.lower():
            name = raw_input("What's your name?")# Asks for new name
            with open(external_file, "w") as f:
                f.write(name)# Write the name to names.txt
                f.write("\n")
                f.close()
    else: # If there is no username as 'testuser' then ask for a name
        name = raw_input("What's your name?")
        with open(external_file, "w") as f:# Write name to the file
            #f.seek(0,2) # Resolves an issue in Windows
            f.write(name)# Write the name to names.txt
            f.write("\n")
            f.close()

修改后的代码：

import os
#hard code the path to the external file
external_file = 'names.txt'

#if file doesn' exists, create a new file
if not os.path.exists(external_file):
    #Ask the user's name
    name = raw_input("What's your name?")
    with open(external_file, "a") as f: #using "a" will append to the file
        f.write(name)# Write the name to names.txt
        f.write("\n")
        f.close()
else:
    #if file exists, use it to load name, else ask user
    with open(external_file, "r") as f:#r+ opens a file for reading & writing
        lines = f.read().split('\n') # split the names 
        f.close()
        print "Hi {}".format(lines[0])
        response = raw_input("Is this your name?")
        if 'no' in response.lower():
            name = raw_input("What's your name?") # Asks for new name
            with open(external_file, "w") as f:
                f.write(name)# Write the name to names.txt
                f.write("\n")
                f.close()

从文件中获取信息

1 个答案: