Run Python Script X Number Times if Error

Question

I am trying to run the below script with the four chunks referencing four other scripts; LIBERTY, TRA, GTS, and SOPI. The issue I have is a single script might run into an error but will clear once run again.

Is there a way to make a loop to run a max of 3 times for each chunk? For each chunk and not as a whole. If an error is received three times, for that chunk/outside script, it will provide an error.

The code,

import os

# Call on each scraper script to run

# LIBERTY
os.chdir("S:\Supply\Risk Management\Daily auto downloads\Storage\LIBERTY")
exec(open('LIBERTYScraper.py').read())

# TRA
os.chdir("S:\Supply\Risk Management\Daily auto downloads\Storage\TRA")
exec(open('TRAScraper.py').read())

# GTS
os.chdir("S:\Supply\Risk Management\Daily auto downloads\Storage\GTS")
exec(open('GSIScraper.py').read())

# SOPI 
os.chdir("S:\Supply\Risk Management\Daily auto downloads\Storage\SOPI")
exec(open('SOPIScraper.py').read())

# Finish statement
print("Scraper data pulls have been completed.")

So you want to run each chunk of code over if there is an error? — Raed Ali
– Raed Ali, Commented Jan 28, 2022 at 13:01
That is correct, if an error, run another time. If an error is received 3 times, then give the error and stop the script. — Cordell Jones
– Cordell Jones, Commented Jan 28, 2022 at 13:05

Robin Dillen · Accepted Answer · 2022-01-28 15:28:48Z

2

Something like this should work:

import os

# Call on each scraper script to run

# LIBERTY
os.chdir("S:\Supply\Risk Management\Daily auto downloads\Storage\LIBERTY")
with open('LIBERTYScraper.py') as f:
    for _ in range(3):
        try:
            exec(f.read())
            break;
         except Exception: # generaly not a great idea, put a more refined exception
             continue;

# Finish statement
print("Scraper data pulls have been completed.")

edited Jan 28, 2022 at 15:28

answered Jan 28, 2022 at 13:03

Robin Dillen

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Comments

Devang Sanghani · Accepted Answer · 2022-01-28 16:57:13Z

1

Something like this :

for i in range(3):
  try:
    os.chdir("S:\Supply\Risk Management\Daily auto downloads\Storage\LIBERTY")
    exec(open('LIBERTYScraper.py').read())
    break
  except:
    print("Error opening file")

edited Jan 28, 2022 at 16:57

answered Jan 28, 2022 at 13:05

Devang Sanghani

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2 Comments

Cordell Jones Over a year ago

Then just add "continue;" below the except part for it to follow through with the other code? Apologies, still fairly new to coding.

Devang Sanghani Over a year ago

Added the break as we don't want it to iterate more if the file is opened successfully. continue is not essential.

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