Pip-for-windows worked great! Bob's your uncle! Case closed. Pete
> -----Original Message----- > From: Tutor [mailto:tutor-bounces+pete.wilson=atmel....@python.org] On > Behalf Of Mark Lawrence > Sent: Friday, May 15, 2015 7:15 PM > To: tutor@python.org > Subject: Re: [Tutor] Connecting Py 2.7 with visa > > On 15/05/2015 23:12, Wilson, Pete wrote: > > Greetings I am trying to write a test executive program using python > 2.7 on a windows 7 computer. I want to connect to a Keithley 2100 > voltmeter using National Instruments VISA. I am having trouble > installing pyvisa. All the documentation refers to using 'pip' and a > command line "$ pip install pyvisa" . What interface or console is > this? "$" prompt looks like a Linux command line. How do we do this > with windows? > > > > It's a Windows command line prompt. You can get this by hitting the > Windows logo key with 'R' and then entering cmd<return>. However the > simplest way for you I think is to download this > https://sites.google.com/site/pydatalog/python/pip-for-windows > > > Do I have to do this? Or can I use the native visa module in Python > 2.7? Using the help() and dir() features I can get some basic > information about visa, but the functions have changed, like > visa.ResourceManager.open_resource is not working. I really liked this > function... Are there any examples of how to use this new visa? I have > some working code below that uses pyvisa, can it be converted? > > > > Please help us to help you. Stating "is not working" is less than > useless, please show us exactly what happens. Cut and paste any > output, don't rely on typing it as this often results in further errors > that just confuse the issue. > > > def update_current(): > > import visa > > > > rm = visa.ResourceManager() > > rm.list_resources() > > > > current_1_ma = "" > > exe_check = "PASS" > > > > try: > > dut_data = open("dut_data.txt", "w") > > except: > > exe_check = "FAIL" > > Don't use bare excepts as it's asking for trouble. Much better to > leave out the error handling to start with and just let your > programming errors bubble up as stack traces. Then add in appropriate > things to catch. In the above FileNotFoundError amongst others seems > suitable. > > -- > My fellow Pythonistas, ask not what our language can do for you, ask > what you can do for our language. > > Mark Lawrence > > _______________________________________________ > Tutor maillist - Tutor@python.org > To unsubscribe or change subscription options: > https://mail.python.org/mailman/listinfo/tutor _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
