Part 2 — Errors handling [Catching all bugs]

In this part, we will work with bugs. We will catch them.

Table of contents

1. Supervisely logger

2. Use [try: except] with traceback

3. Results

Step 1 — Supervisely logger

Supervisely has a logger. It is a wrapper over Python's built-in logging package.

First thing we need to do is install Supervisely Python SDK to your environment:

pip install supervisely

Let's take the code from Part 1 as a basis and add a logger:

import supervisely_lib as sly

worlds = ['Westeros', 'Azeroth', 'Middle Earth', 'Narnia']

sly_logger = sly.logger

for world in worlds:
    sly_logger.info(f'Hello {world}!')

Step 2 — Use [try: except] with traceback

To handle errors, you can use the [try: except] construction

src/main.py

import supervisely_lib as sly

worlds = ['Westeros', 'Azeroth', 'Middle Earth', 'Narnia']

sly_logger = sly.logger

try:
    for world in worlds:
        sly_logger.info(f'Hello {world}!')

    if 'Our World' not in worlds:
        raise ValueError(f"Can't find Our World")

except Exception as ex:
    sly_logger.warning(ex)

Step 3 — Results

Error Handling