Windows上的写作和读取虚拟文件
作为Windows上Python项目的一部分，我需要使用小文件作为交流不同过程的一种手段。由于必须使用subprocess.run（程序，args ...）来调用外部进程，因此我不能简单地获取文件描述符，而是将其作为参数传递给外部过程。相反，我需要一个可以从普通文件系统访问的名称的文件。因此，我想要一种创建临时文件的简单方法，该文件存储在内存（RAM）而不是磁盘中，并且具有其他外部进程可以使用的名称。在Linux中，此可以使用函数os.mkfifo（）来实现。但是，此功能在Windows中不可用。
目前，我只是简单地使用tempfile模块来创建一个临时文件，该文件一旦不再需要，就会存储在磁盘中并删除。这是我的代码的一个小示例：
import tempfile
import subprocess
import os
fd = tempfile.NamedTemporaryFile(mode="w+t", delete=False) # Obtain file descriptor
file_path = fd.name # Obtain file path
# Write data (encoded as str) to the file and close it
fd.write(data)
fd.close()
# Access this same file from an external process
output = subprocess.run( [program, file_path], stdout=subprocess.PIPE).stdout.decode('utf-8')
# Delete the file
os.remove(file_path)
print("External process output:", output)
因此，我的问题是：如何更改此代码，以便在fd.write（data）中将数据写入RAM而不是磁盘而不是磁盘？
As part of a Python project on Windows, I need to use small files as a means to communicate different processes. Since the external process must be called with subprocess.run(program, args...), I can't simply obtain a file descriptor for my file and pass it as a parameter to the external process. Instead, I need a file with a name which can be accessed from the normal filesystem. Thus, I would like a simple way to create a temporary file which is stored in memory (RAM) instead of disk, and which has a name other external processes can use to access it. In Linux, this can be achieved with the function os.mkfifo(). However, this function is not available in Windows.
At the moment, I am simply using the tempfile module to create a temporary file which is stored in disk and deleted once it is no longer needed. Here is a small reproducible example for my code:
import tempfile
import subprocess
import os
fd = tempfile.NamedTemporaryFile(mode="w+t", delete=False) # Obtain file descriptor
file_path = fd.name # Obtain file path
# Write data (encoded as str) to the file and close it
fd.write(data)
fd.close()
# Access this same file from an external process
output = subprocess.run( [program, file_path], stdout=subprocess.PIPE).stdout.decode('utf-8')
# Delete the file
os.remove(file_path)
print("External process output:", output)
So, my question is the following: How can I change this code so that in line fd.write(data) the data is written to RAM instead of disk?
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