Hello, Hoping that this comes through as text only. Not sure how to force that with Gmail.
Very new to Python and trying to follow the instructions I've read on the tutorial and other places. But, I'm not meeting with any success. I have a feeling this is something simple but a search of the archives didn't provide any useful results. Perhaps I just don't know the 'lingo' yet. So I apologize for the likelihood that this is a duplicate. I have a background in C and other asm languages so that should give you some idea of my current understanding related to programming. Forgive any incorrect use of terms.. I started writing code in Python for a little project I'm working on. I used examples from the tutorial provided by the DIY board (Adafruit FT232H Breakout). Those instructions were the basis for my working code. As time went on, I had a _whole_ lot of code and it was getting unmanageable. So I looked into breaking it into separate modules (like I would do in C). I then used the import statement to 'include' them into the main.py file. I ran into a problem in that the code which was moved to the module could no longer 'see' the ft232h variable (object?). After many attempts, I figured out that the best solution seemed to be to put the ft232h setup code into yet another file. I then imported that file into both my main.py and foo.py files. And, that seemed to work.. on Friday. This morning, I came back to continue working on the code, and now the ft232h variable can no longer be 'seen' by my modules... When I was running the code on Friday it was being run from a command line each time. So, I'm assuming that the dictionary disappears and that there is a new 'fresh' start each time I execute. Is this correct? I'm running Python 2.7 and it is running on a native Ubuntu machine at 16.04 LTS. I'll refrain from posting a bunch of code, but here is the 5000 foot view: main.py - calls various functions from other *.py files (foo.py, etc). It also creates a console-based menu selection which determines which of the functions to call. foo.py (and others) - contain the actual functions for the different work that I want to get done. spi.py - contains the setup and initialization code for the Adafruit board and configures it to function as a SPI peripheral via USB. execution looks like this: $ sudo python main.py So, the important questions are: - Was I mislead by the fact that there was a power cycle on the machine and it has now forgotten something that was staying resident when I tested the code on Friday? Or, does each 'run' of the script start fresh? - What approach do I need to use to be able to initialize the interface in spi.py and have it be something that is accessible to all the other modules in my project? Thank you in advance for your time. _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: https://mail.python.org/mailman/listinfo/tutor
