小编cur*_*wag的帖子

我正在尝试为我正在构建的.Net Web应用程序设置应用程序基本路径.我一直在配置构建器上遇到错误.这是我得到的错误.

DNX,Version=v4.5.1 error CS1061: 'ConfigurationBuilder' does not contain a definition for 'SetBasePath' and no extension method 'SetBasePath' accepting a first argument of type 'ConfigurationBuilder' could be found (are you missing a using directive or an assembly reference?)

我假设我会得到同样的错误我.AddJsonFile()和.AddEnvironmentVariables().我做错什么了吗？我没有为project.json添加正确的依赖项吗？我附上了我的startup.cs和我的project.json.

project.json

{
"version": "1.0.0-*",
"compilationOptions": {
"emitEntryPoint": true
},
"tooling": {
"defaultNamespace": "TripPlanner"
},

"dependencies": {
  "Microsoft.AspNet.StaticFiles":  "1.0.0-rc1-final",
  "Microsoft.AspNet.Server.Kestrel": "1.0.0-rc1-final",
  "Microsoft.AspNet.Mvc": "6.0.0-rc1-final",
  "Microsoft.AspNet.Mvc.TagHelpers": "6.0.0-rc1-final",
  "Microsoft.Framework.Configuration": "1.0.0-beta8",
  "Microsoft.Framework.DependencyInjection": "1.0.0-beta8"
  //"Microsoft.Extensions.PlatformAbstractions": "1.0.0-beta8"
},

"commands": {
  "web": "Microsoft.AspNet.Server.Kestrel"
},

"frameworks": …

所以我试图让我的python程序接受用户的文件,然后截断文件,向其添加内容,输出文件,最后关闭.问题是它不会输出.我已经在写入+读取模式下打开文件,但文件不会输出target.read().这是我的源代码.问题是从底部开始的第三行.

    from sys import argv

    script, filename = argv

    print "We're going to erase %r." %filename
    print "If you don't want that, hit CTRL-C."
    print "If you do want that, hit RETURN."

    raw_input("?")

    print "Opening the file..."
    target = open(filename, 'w+r')

    print "Truncating the file. Good bye!"
    target.truncate()

    print "Now I'm going to ask you for three lines."

    line1 = raw_input("line 1: ")
    line2 = raw_input("line 2: ")
    line3 = raw_input("line 3: ")

    print "I'm going to write …