Question

我通过文档阅读，但仍然无法弄清楚如何打开文件，读取每一行，将该行存储为新的字符串变量（暂时）。

我试过了：

file = file.open ("users.txt", r)

for user in users:
    user = users.readline ()
    ''' this is where I'd like to add something that creates user, user, until EOF '''
file.close ()

Answer 1

目前还不清楚你要做什么。

以下是Python习语中的概要（如果我理解的话）：

您的代码 - 评论：

# file = file.open ("users.txt", r) NO! just use open' and don't use 'file' for a name

# for user in users:   What is 'users'?
    # user = users.readline () # if this is a file, just do 'for user in users: ...'
    ''' this is where I'd like to add something that creates user, user, until EOF '''
# file.close ()   # not necessary if you use `with`

修正：

with open("users.txt", r) as users:
   for user in users:
      # if each line of the file is a 'user' this gives you one user at a time

Answer 2

试试这个

var combinedList = list1.Concat(list2)     
                        .Concat(list3)
                        .Concat(list4)
                        .OrderByDescending(x => x.Fields["Press Release Date"] != null || x.Fields["Publish Date"] != null)
                        .ThenBy(x => x.Fields["Press Release Date"] != null ? x.Fields["Press Release Date"].ToString() : "")
                        .ThenBy(x => x.Fields["Publish Date"] != null ? x.Fields["Publish Date"].ToString() : "").ToList();

希望有所帮助。

如何遍历文件并按行创建新的字符串变量

2 个答案: