Re: [Discuss-gnuradio] File Sink - Question

[Marcus D. Leech]

On 02/25/2017 11:44 AM, Kevin Reid wrote:

On Sat, Feb 25, 2017 at 8:29 AM, Marcus D. Leech <address@hidden> wrote:

On 02/25/2017 11:14 AM, Kevin Reid wrote:

On Sat, Feb 25, 2017 at 8:09 AM, Ellie White <address@hidden> wrote:

    self.blocks_file_sink_0 = blocks.file_sink(gr.sizeof_float*512, "C:\Users\Ellie\fm_data.dat", False)

Your problem is here. Those backslashes need to be escaped in the string literal.

Since this code was generated by GRC then this would seem to be a bug in GRC, [...]

Not clear this is a bug in GRC.  Nearly all parameters in GRC blocks are simply Python expressions.

But the text entered in GRC, in this case, is not quoted, so it is not a Python _expression_. Implicitly adding quotes but not implicitly escaping backslashes is, in my opinion, an inconsistent choice.

I think that in either case, you end up failing the least-astonishment test.

If you implicitly escape "\",  then the folks who know this is Python underneath with  be unable to enter things like \x54 in a filename--which
  may be a contrived example, but you can see how automatic escaping of "\" ends up in a different type of hell than not escaping them.
  Pick your hell.