CODEWITHSUNDEEP
pythonnumpy
santobedi
santobedi

Reputation: 858

Python Script on Startup:: ValueError:numpy.ndarray size changed, may indicate binary incompatibility. Expected 48 from C header, got 40 from PyObject

The Error occurs only with the shell script after reboot!

The issue:

I am trying to run my python script on Startup in Raspberry Pi. So, I wrote a Shell script called launcher.sh as follows:

#!/bin/sh
# launcher.sh
# navigate to the home directory, then to this directory, then execute python script, then back home

cd /
cd home/pi/myfile
python myfile.py &
cd /

After rebooting the Raspberry Pi, I get ValueError:numpy.ndarray size changed, may indicate binary incompatibility. Expected 48 from C header, got 40 from PyObject in cronlog.

Solutions available:

This error is not new and lots of online resources are available 1,2,3, etc.I followed these links and installed pycocotools and upgraded numpy. I get no error when I run my python script in the terminal (python myfile.py) and also when I run the shell script (sh launcher.sh).

However, after I reboot the Raspberry Pi, the error occurs. What has happened here?

Upvotes: 4

Views: 5609

Answers (1)

santobedi
santobedi

Reputation: 858

After a rigorous search, I got some hints from this accepted answer. I checked my cronlog file and followed the python import attempt until the error had occurred. The error had occurred just after import Interval attempt. Therefore, I installed the numpy as follows:

sudo pip install --upgrade numpy Interval

It solved my problem. Everything works fine after the reboot.

Upvotes: 2

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