Calling module from another module

Python Help
1

I have some modules on a Raspberry Pi pico in one directory.
From the main module, I want to run the script from another module.I have tried to use the code subproces.run(python, “module name”), but that doesn’t work.

This is the code from the module I called ‘update rtc module’:

from machine import I2C, Pin
from ds3231_gen import *
import time

sda_pin=Pin(4)
scl_pin=Pin(5)

i2c = I2C(0, scl=scl_pin, sda=sda_pin)
time.sleep(0.5)

ds = DS3231(i2c)

ds.set_time()

print (“Date en Time saved in RTC (DS3231)”)

In the main program I want to call this ‘update rtc module’.

I hope somebody can help me with the syntax.

Thank you.

Lo

2

Is all the code involved python? can you import the code you want to run and call it, instead of calling subprocess?

3

The argument of run should be a list:

subprocess.run([path_to_python, path_to_module])
4

If the module is called update rtc module.py it might not work on some versions (at least afaik), because of the whitespace in the name / in the command. I would either

a) Rename the file to something like update_rtc_module.py

b) Use the command python “update_rtc_module.py” instead, meaning you’ll do subprocess.run(f”{python_executable} ‘{filename}’”.split())

I would advise you to just rename files if possible. It makes it a lot easier for a lot of tools to be able to use the file, especially in the terminal. Needing to wrap file/path names in "” is something that I sadly have to do in some cases, and it makes me go mad.

5

Using split() here will break up the file name if it has spaces. You want [sys.executable, filename] (or shell=True).

6

Thank you all for your replies. The Import statement works fine for me, but the other answers were also helpful. Now I understand the subprocess better.
Thanks again.
Lo

7

Thank you Phildini. The import statement works fine!