On 27/08/2026 16:16, Rob Cliffe via Python-list wrote:
Thanks Pierre and MRAB.
I tried that; here is a hex dump of my concatenated file:
16:09:12 R:\DSPR>dump ShortDocument3.txt
File ShortDocument3.txt Size 60 (hex 3C) bytes
00000000: 54 68 69 73 20 69 73 20 74 68 65 20 66 69 72 73 |This is
the firs|
00000010: 74 20 64 6F 63 75 6D 65 6E 74 2E 0D 0A 0C 54 68 |t
document...♀Th|
00000020: 69 73 20 69 73 20 74 68 65 20 73 65 63 6F 6E 64 |is is the
second|
00000030: 20 64 6F 63 75 6D 65 6E 74 2E 0D 0A |
document... |
but no dice; it printed the whole thing on one sheet, with the form
feed printed as a
thick-headed up-arrow character at the start of the second line.
It's looking as if it will only switch sides when the first side is full.
[snip]
Apparently you need to print in "RAW" mode, otherwise the printer driver
will just discard the Form Feeds.
I asked Copilot, and it came up with this example code (not tested
because I'm on Linux now). Good luck!
import win32print
import win32api
printer_name = win32print.GetDefaultPrinter()
hPrinter = win32print.OpenPrinter(printer_name)
doc_info = {
"pDocName": "Raw FF Test",
"pOutputFile": None,
"pDatatype": "RAW"
}
win32print.StartDocPrinter(hPrinter, 1, doc_info)
win32print.StartPagePrinter(hPrinter)
with open("myfile.txt", "rb") as f:
data = f.read()
win32print.WritePrinter(hPrinter, data)
win32print.EndPagePrinter(hPrinter)
win32print.EndDocPrinter(hPrinter)
win32print.ClosePrinter(hPrinter)
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