Python中的stdout打印但无法写入文件

Question

我突然对Python的这种奇怪行为感到非常沮丧。我一直在写各种各样的数据，但从今天早上开始，似乎就不起作用了。我在发帖前已经提到了这些：

• How to redirect 'print' output to a file using python?
• Failed to write to file but generates no Error
• Unable to write data into a file using python
• Unable to write list of elements to a file using python

已经尝试了以下所有命令，但它不向删除.txt文件。怎么回事？在

fl=open('delete.txt','w')
fl.write(msg) <--Doesnt work,tried this also
fl.write('%s' %msg) <--Doesnt work,tried this also
fl.write("at least write this") <-- Doesnt work,tried this also
print (msg) <- WORKS

代码：

^{2}$

更多代码：

type(mes) = str
mes="omg would love front yard"

Answer 1

当写入这样的文件句柄时，需要显式刷新输出流。在

f = open("test.txt", "w")
f.write("this is a test\n")
# no text in the output file at this point
f.flush()
# buffers are flushed to the file
f.write("this, too, is a test\n")
# again, line doesn't show in the file
f.close()
# closing the file flushes the buffers, text appears in file

根据文件.写入公司名称：

Note that due to buffering, flush() or close() may be needed before the file on disk reflects the data written.

Answer 2

你的代码片段的缩进完全是一团糟，但是不管怎样：你的代码开头是：

for i in hd_com.comment_message[1:500]:
    fl=open('delete.txt','wb')

这意味着您将在每次迭代时重新打开该文件以进行写入，从而删除上一次迭代可能已写入的内容。在