autopep8 formatting not working

Environment data

• VS Code version: 1.28.0 (user setup)
• Extension version (available under the Extensions sidebar): 2018.9.0 (9 Oct 2018)
• OS and version: Windows 10
• Python version (& distribution if applicable, e.g. Anaconda): Python 3.6.1 (v3.6.1:69c0db5, Mar 21 2017, 18:41:36) [MSC v.1900 64 bit (AMD64)]
• Type of virtual environment used (N/A | venv | virtualenv | conda | …): pipenv
• Relevant/affected Python packages and their versions: autopep8 1.3.5 (pycodestyle: 2.4.0) pylint 2.0.1

Actual behavior

Executing the command ‘Format Document’ does nothing to the document. It does however show “Formatting with autopep8” in the blue bottom bar. I have tried my best reading the various guides for VS Code Python and formatting but to no avail.

Expected behavior

I expected it to at least format something.

Steps to reproduce:

1. Copy&paste the code found on https://pypi.org/project/autopep8/

import math, sys;

def example1():
    ####This is a long comment. This should be wrapped to fit within 72 characters.
    some_tuple=(   1,2, 3,'a'  );
    some_variable={'long':'Long code lines should be wrapped within 79 characters.',
    'other':[math.pi, 100,200,300,9876543210,'This is a long string that goes on'],
    'more':{'inner':'This whole logical line should be wrapped.',some_tuple:[1,
    20,300,40000,500000000,60000000000000000]}}
    return (some_tuple, some_variable)
def example2(): return {'has_key() is deprecated':True}.has_key({'f':2}.has_key(''));
class Example3(   object ):
    def __init__    ( self, bar ):
     #Comments should have a space after the hash.
     if bar : bar+=1;  bar=bar* bar   ; return bar
     else:
                    some_string = """
                       Indentation in multiline strings should not be touched.
Only actual code should be reindented.
"""
                    return (sys.path, some_string)

1. Try to format with the command ‘Format Document’

Logs

[brettcannon]

@thernstig your settings aren’t quite right; you want as you have to make each individual item you would pass on the command line an individual thing in the array:

"python.formatting.autopep8Args": ["--max-line-length", "100"]

@gaziqbal yes, -i will break the extension as we read the diff to format the document for you.

And yes, outputting what command we are running for you would be useful and adding more logging is on our (very long) TODO list.

[thernstig]

@brettcannon Good answers as always, thank you for being so easygoing. Keep on making the Python extension even more awesome! 🎸