python3-debug-utils

Debugging utility modules for Python 3 code.

Installing

pip install git+https://github.com/asascience-open/[email protected]#egg=python3-debug-utils

Provides

The following modules are provided:

funcinternals

Provides deep introspection of function internal state at runtime; dumps to log file or terminal. Supports displaying images in-line on supported frame-buffer terminals like iTerm2 and xterm.

Basic import:

from funcinternals.txt import debug_text as dbg

For the ability to display PIL image objects in a supported terminal, you should:

pip install -r funcinternals/img/requirements.txt

then:

from funcinternals.img import debug_visual as dbg

Using funcinternals

After importing as above, you can use the library as follows. To inspect the state of one object, pass its name as a string:

def my_func():
    lst = [1, 2, 3, 4]

    dct = {
        "foo": "bar",
        "baz": "qux",
        "list": lst
    }
    dbg.debug('dct')  # like this
    var = "http://example.com"

    return

Which, when placed in a file called test.py and called, will print:

-------------------------------------------------- ( debug called from: my_func @ test.py:11 ) --------------------------------------------------

<class 'dict'>
dct =
baz: qux
foo: bar
list: [1, 2, 3, 4]

Or to inspect the state of all function locals at a given point, do:

def my_func():
    lst = [1, 2, 3, 4]

    dct = {
        "foo": "bar",
        "baz": "qux",
        "list": lst
    }
    var = "http://example.com"

    dbg.inspect()  # like this
    return

Which similarly will print:

-------------------------------------------------- ( debug called from: my_func @ test.py:14 ) --------------------------------------------------

<class 'list'>
lst = [1, 2, 3, 4]

-------------------------------------------------- ( debug called from: my_func @ test.py:14 ) --------------------------------------------------

<class 'dict'>
dct =
baz: qux
foo: bar
list: [1, 2, 3, 4]

-------------------------------------------------- ( debug called from: my_func @ test.py:14 ) --------------------------------------------------

<class 'str'>
var = 'http://example.com'

TODO

• Add support for defining custom type-handler to_string methods for complex types.