I am pretty sure I installed python3. And, also, matplotlib, scipy, and
numpy. If I enter either python or python3, I get the >>> prompt, so I
may have both installed. How do I verify which versions of python and
numpy, matplotlib and scipy I have installed? I am pretty sure I have
matplotlib, scipy, and numpy installed under python3, especially since I
don't get an error message when I run the program using python3, but, I
don't get any output, either, so something is wrong.
Would it be a help if I actually list the python program that I am
trying to run?
On 10/25/2016 7:50 PM, Alan Gauld via Tutor wrote:
On 25/10/16 20:24, Ed Troy wrote:
my Ubuntu machine. I created the diode IV curve data as per the article,
but I can't seem to get it to run.
edward@ubuntu:~$ python LED_model_utf8.py LED_IV.txt
Traceback (most recent call last):
File "LED_model_utf8.py", line 4, in <module>
import matplotlib.pyplot as plt
ImportError: No module named matplotlib.pyplot
Plain 'python' on Ubuntu usually runs Python v2.
It looks like you don;t have Matplotlib inastalled for Python 2.
Matplotlib is part of the 3rd party SciPy libraries and not
part of the standard python install.
Having looked at the web page it seems you need to use python3
and have scipy, numpy and matplotlib packages installed.
You should have them in your software centre as
python3-scipy, python3-numpy and python3-matplotlib
If I type python3 LED_model_utf8.py LED_IV.txt, there is a pause and
then I am back to the $ prompt. So, it seems like the program is
running, but I am not getting any results
That's correct. But without seeing the code and data it's
hard to guess but you could at least verify that it runs
by editing the python file to include print lines.
Go to the end of the file and modify the last segment
to look like:
if __name__ == "__main__":
print("Starting....")
main()
print("Stopping...")
The page that contains the file and a description of how it works is:
https://leicesterraspberrypi.wordpress.com/projects/modelling-a-diode-for-use-in-spice-simulations/
I see the code but I don't see a path that
doesn't print anything... You should see some
kind of output.
--
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