I'm looking at using a X3270 terminal emulator. I have http://x3270.bgp.nu/ looked over this source material and still don't see how to start using the tool or configure it.
I'm wonder how I can open a terminal and connect. Another question is how could I integrate this into a python program?
edit:
here is a snippet:
em = Emulator()
em.connect(ip)
em.send_string('*user name*')
em.exec_command('Tab')
em.send_string('*user password*')
em.send_enter()
em.send_enter()
em.wait_for_field()
em.save_screen("{0}screenshot".format(*path*))
looking at the save screen i see that the cursor hasn't moved? I can move the cursor using
em.move_to(7,53)
but after that i don't get any text sent through. Any Ideas?
Here's what I do; it works 100% of the time:
from py3270 import *
import sys, os
host = "%s" % sys.argv[1].upper()
try:
e = Emulator()
e.connect(host)
e.wait_for_field()
except WaitError:
print "py3270.connect(%s) failed" % (host)
sys.exit(1)
print "--- connection made to %s ---" % (host)`
If you haven't got a network connection to your host, that wait_for_field() call is going to wait for a full 120 seconds. No matter what I do, I don't seem to be able to affect the length of that timeout.
But your user doesn't have to wait that long, just have him kill your script with a KeyboardInterrupt. Hopefully, your user will grow accustomed to success equaling the display of that "--- connection made ..." message so he'll know he's in trouble when/if the host doesn't respond.
And that's a point I need to make: you don't connect to a terminal (as you described), rather you connect to a host. That host can be either a VTAM connection or some kind of LPAR, usually TSO or z/VM, sometimes CICS or IMS, that VTAM will take you to. Each kind of host has differing prompts & screen content you might need to test for, and sometimes those contents are different depending on whose system you're trying to connect to. Your script becomes the "terminal", depending on what you want to show your user.
What you need to do next depends on what kind of system you're trying to talk to. Through VTAM? (Need to select a VTAM application first?) To z/VM? TSO? Are you logging on or DIALing? What's the next keystroke/field you have to use when you're working with a graphic x3270/c3270 terminal? You need to know that in order to choose your next command.
Good luck!
Please read my comment above first - it would be helpful to have more detail as to what you need to do.
After considering that…have you looked at the py3270 package at https://pypi.python.org/pypi/py3270/0.1.5 ? The summary says it talks to x3270.
Related
I'm trying to print some RFID tags and retrieve their TIDs to store them in my system and know which tags have been printed. Right now I'm reading the TID and sending it back to my computer (connected via USB with the my ZT421 printer) with the following code:
^RFR,H,0,12,2^FN0^FS^FH_^HV0,24,,_0D_0A,L^FS
^RFW,H,2,12,1^FD17171999ABABABAAAAAAAAAB^FS
This is repeated for each tag that I'm printing. However, when printing 10 tags, I only get 9 TIDs. If after that I try to print 7 tags, I still get 9 TIDs. To be honest I'm a bit lost now, because even trying to use the code examples from the ZPL manual (I've tried the ^RI instruction also) it doesn't seem to work.
The communication with the printer is beeing done through Zebra Setup Utilities' direct communication tool.
I tried to retrieve each printed tag TID with:
^RFR,H,0,12,2^FN0^FS^FH_^HV0,24,,_0D_0A,L^FS
^RFW,H,2,12,1^FD17171999ABABABAAAAAAAAAB^FS
but I always get 9 TIDs.
I also tried getting the TID with the ZPL manual example for the ^RI command:
^XA
^FO20,120^A0N,60^FN0^FS
^RI0,,5^FS
^HV0,,Tag ID:^FS
^XZ
And I got absolutely nothing returned to the computer, just a mssage saying "Tag ID:" and no value shown.
I would really appreciate some help with this...
Thanks in advance!
I've fixed the issue, but I'm going to leave the solution here just in case someone else is facing the same problem.
I thought that maybe it wasn't a code issue, but something related to the computer-printer communication. It turned out to be the case. The Zebra Setup Utilities program has a button that says "options". If you click it, a new screen will open and there you can configure the seconds that the program will wait for the printer response (in this case through USB). By default it's set to 5, i changed this value to 100, which is the maximum. This meant that instead of just printing and retrieving the TIDs of 6-9 tags, now I can do it for about 100.
This is not amazing because in my case it implied creating 25 files for the 2500 tags I had to print and store the TIDs, however it's far better than before.
from pywinauto.application import Application
app = Application().Start(cmd_line=u'"path to program" ')
afx = app[u'Afx:01360000:0']
afx.Wait('ready')
afxtoolbar = afx[u'1']
toolbar_button = afxtoolbar.Button(3)
toolbar_button.Click()
window = app.Dialog
window.Wait('ready')
edit = window.Edit4
edit.Click()
app.typekeys ("Success")
So at this point, I've gotten the application to open, the correct window to pop up and also a mouse click on the box that I want to populate with a short string. I cannot for the life of me, figure out how to pass keyboard input to this field. I have read all the docs for PyWinAuto, and nothing is helping...
Basically all I need to do is figure out how to send a string, and then how to send the TAB key six times. I can then finish my program to automate this application.
I am also using Swapy64bit to help. The program uses a win32 backend. I'm using Python 3.6.
Am I not prefixing typekeys correctly? The PyWinAuto documentation leaves much to be desired.
First the correct name of the method is type_keys, but assume you use it correctly.
The reason might be losing focus at the edit control because type_keys tries to set focus automatically. The solution is:
app.type_keys("Success{TAB 6}", set_foreground=True)
I'm looking for help running a python script that takes some time to run.
It is a long running process that takes about 2hours per test observation. For example, these observations could be the 50 states of the usa.
I dont want to baby sit this process all day - I'd like to kick it off then drive home from work - or have it run while I'm sleeping.
Since this a loop - I would need to call one python script that loops through my code going over each of the 50 states - and a 2nd that runs my actual code that does things.
I've heard of NOHUP, but I have very limited knowledge. I saw nohup ipython mypython.py but then when I google I get alot of other people chiming in with other methods and so I don't know what is the ideal approach for someone like me. Additionally, I am essentially looking to run this as a loop - so don't know how that complicates things.
Please give me something simple and easier to understand. I don't know linux all that well or I wouldn't be asking as this seems like a common sort of command/activity...
Basic example of my code:
Two files: code_file.py and loop_file.py
Code_file.py does all the work. Loop file just passes in the list of things to run the stuff for.
code_file.py
output = each_state + ' needs some help!'
print output
loop_file.py
states = ['AL','CO','CA','NY','VA','TX']
for each_state in states:
code_file.py
Regarding the loop - I have also heard that I can't pass in parameters or something via nohup? I can fix this part within my python code....for example reading from a CSV in my code and deleting the current record from that CSV file and then re-writing it out...that way I can always select the top record in the CSV file for my loop (the list of states)
May be you could modify your loop_file.py like this:
import os
states = ['AL','CO','CA','NY','VA','TX']
for each_state in states:
os.system("python /dir_of_your_code/code_file.py")
Then in a shell, you could run the loop_file.py with:
nohup python loop_file.py & # & is not necessary, it just redirect all output of the file to a file named nohup.out instead of printing it on screen.
I have a Zebra RFD8500 here and I connected to it via the terminal. I am trying to use the ZETI command read to access epc's, but it does not read anything.
But if I use the ZETI command inventory it finds all the tags around.
Anyone knows how to use the read command properly? Also is there some kind of filter per default on?
I am using the developer example on page 174 Link to PDF
Not sure if you solved this problem, but I couldn't find anything else via Google. I had the same problem with using read in ZETI (Zebra RFD8500). The Zebra tech support told me that to use access operations like read and write, you have to turn off dynamic power (which I think is on by default).
Unfortunately, I am not using the iOS API/SDK (writing a custom one for another device), but here's the gist of what you'd be doing:
Turn off dynamic power
Do an inventory
Read some memory bank, like the EPC bank. Optionally, you can also specify access criteria to single out a tag.
To test how this worked in ZETI, I screened into the RFD8500 (on my Mac, doing ls /dev/tty.RFD* lists several ttys, I chose the one ending in "-R"):
screen /dev/tty.RFD8500{long number}-R
Then I issued these commands:
dp .disable
in
rd
Commands:
dp = setdynamicpower
in = inventory
rd = read
After issuing "rd", you should be able to see the user memory banks (the default bank for the "rd" command).
I've been googling for quite a long time and I just can't find any information on how to get screen_number for every screen connected to computer. Here I found a list of macros and some of them (like for example ScreenOfDisplay(display, screen_number) ) use argument screen_number. However there is no such macro that could give me a list of those numbers (one for every connected screen). I know how to get number of default screen (DefaultScreen() ) and count of all screens ( ScreenCount() ) but what about other screens? I noticed that screen_number of default screen is 0, although I have only one screen connected to my computer so I can't really test what happens when there are more of them. I think that screen_number could be assigned in a very simple way which is screen_number=0 for first screen,screen_number=1 for second,screen_number=2 for third and so on but as I said... I can't test wheather it's true and even if I had multiple screens how could I be sure that it works like this for all computers .Please ,if anyone of you has more experience with X11 and knows all details about how it works,tell me if I am right.
The ScreenCount(dpy) macro and int XScreenCount(Display*) function both return the number of screens connected to the display. Valid screen numbers are 0 to ScreenCount(dpy)-1. Macros in Xlib.h confirm:
#define ScreenCount(dpy) (((_XPrivDisplay)dpy)->nscreens)
#define ScreenOfDisplay(dpy, scr) (&((_XPrivDisplay)dpy)->screens[scr])
Your source (2.2.1. Display Macros) provides enough information. Normally the default screen-number is 0, e.g., when connecting to the local host you could use :0.0 as indicated in the documentation for XOpenDisplay.
That is "normally". If you run VNC, normally that runs on a different display (the first 0 in the simple connection string shown).
But (reading the documentation), when an application calls XOpenDisplay, it asks for the given screen-number (which the X server may/may not honor):
screen_number
Specifies the screen to be used on that server. Multiple screens can be controlled by a single X server. The screen_number sets an internal variable that can be accessed by using the DefaultScreen() macro or the XDefaultScreen() function if you are using languages other than C (see "Display Macros").