Multi line if clauses

[Quappas]

Describe the style change

I write python modules that are configured by .yml files which look something like this:

Category_X:
  Subcategory_Y:
    Enable_Condition_Z: true

After reading them in, they are addressed like a nested dictionary (see below). Then I write if clauses that check if a condition is to be checked and if the condition is fulfilled. Black messes that up a bit.

Examples in the current Black style

def black_if_test():
    if complicated_settings_dict["Category_X"]["Subcategory_Y"][
        "Enable_Condition_Z"
    ] and fullfills_condition_Z(my_object):
        work()

Desired style

def black_if_test():
    if (
        complicated_settings_dict["Category_X"]["Subcategory_Y"]["Enable_Condition_Z"]
        and fullfills_condition_Z(my_object)
    ):
        work()

Additional context

Note that the line complicated_settings_dict["Category_X"]["Subcategory_Y"]["Enable_Condition_Z"] is only 86 characters long. I think black only wants to break it, because it wants to put the and on the same line. Putting the and on the next line (as for all binary operators) would make everything more readable in my opinion. In any case there is no reason here not to keep each condition I am checking for in its own single separate line.

[felix-hilden]

Hi, this is a duplicate of #2156, so let's continue the discussion there!