python devtools

Python's missing debug print command and other development tools.

For more information, see documentation.

Install

Just

pip install devtools[pygments]

pygments is not required but if it's installed, output will be highlighted and easier to read.

devtools has no other required dependencies except python 3.6, 3.7, 3.8 or 3.9. If you've got python 3.6+ and pip installed, you're good to go.

Usage

from devtools import debug

whatever = [1, 2, 3]
debug(whatever)

Outputs:

test.py:4 <module>:
    whatever: [1, 2, 3] (list)

That's only the tip of the iceberg, for example:

import numpy as np

data = {
    'foo': np.array(range(20)),
    'bar': {'apple', 'banana', 'carrot', 'grapefruit'},
    'spam': [{'a': i, 'b': (i for i in range(3))} for i in range(3)],
    'sentence': 'this is just a boring sentence.\n' * 4
}

debug(data)

outputs:

Usage without Import

modify /usr/lib/python3.8/sitecustomize.py making debug available in any python 3.8 code

# add devtools debug to builtins
try:
    from devtools import debug
except ImportError:
    pass
else:
    __builtins__['debug'] = debug