SCons: Format buildsystem files with psf/black

Configured for a max line length of 120 characters.

psf/black is very opinionated and purposely doesn't leave much room for
configuration. The output is mostly OK so that should be fine for us,
but some things worth noting:

- Manually wrapped strings will be reflowed, so by using a line length
  of 120 for the sake of preserving readability for our long command
  calls, it also means that some manually wrapped strings are back on
  the same line and should be manually merged again.

- Code generators using string concatenation extensively look awful,
  since black puts each operand on a single line. We need to refactor
  these generators to use more pythonic string formatting, for which
  many options are available (`%`, `format` or f-strings).

- CI checks and a pre-commit hook will be added to ensure that future
  buildsystem changes are well-formatted.

2 files changed, 14 insertions, 14 deletions

diff --git a/editor/icons/SCsub b/editor/icons/SCsub
index b39c74c66a..f0d51999f0 100644
--- a/editor/icons/SCsub
+++ b/editor/icons/SCsub
@@ -1,21 +1,21 @@
 #!/usr/bin/env python
 
-Import('env')
+Import("env")
 
 from platform_methods import run_in_subprocess
 import editor_icons_builders
 
-make_editor_icons_builder = Builder(action=run_in_subprocess(editor_icons_builders.make_editor_icons_action),
-                                    suffix='.h',
-                                    src_suffix='.svg')
+make_editor_icons_builder = Builder(
+    action=run_in_subprocess(editor_icons_builders.make_editor_icons_action), suffix=".h", src_suffix=".svg"
+)
 
-env['BUILDERS']['MakeEditorIconsBuilder'] = make_editor_icons_builder
+env["BUILDERS"]["MakeEditorIconsBuilder"] = make_editor_icons_builder
 
 # Editor's own icons
 icon_sources = Glob("*.svg")
 
 # Module icons
 for module_icons in env.module_icons_paths:
-    icon_sources += Glob('#' + module_icons + "/*.svg")
+    icon_sources += Glob("#" + module_icons + "/*.svg")
 
-env.Alias('editor_icons', [env.MakeEditorIconsBuilder('#editor/editor_icons.gen.h', icon_sources)])
+env.Alias("editor_icons", [env.MakeEditorIconsBuilder("#editor/editor_icons.gen.h", icon_sources)])
diff --git a/editor/icons/editor_icons_builders.py b/editor/icons/editor_icons_builders.py
index a00f21c265..d7145abe50 100644
--- a/editor/icons/editor_icons_builders.py
+++ b/editor/icons/editor_icons_builders.py
@@ -22,16 +22,16 @@ def make_editor_icons_action(target, source, env):
 
         icons_string.write('\t"')
 
-        with open(fname, 'rb') as svgf:
+        with open(fname, "rb") as svgf:
             b = svgf.read(1)
-            while(len(b) == 1):
+            while len(b) == 1:
                 icons_string.write("\\" + str(hex(ord(b)))[1:])
                 b = svgf.read(1)
 
         icons_string.write('"')
         if fname != svg_icons[-1]:
             icons_string.write(",")
-        icons_string.write('\n')
+        icons_string.write("\n")
 
     s = StringIO()
     s.write("/* THIS FILE IS GENERATED DO NOT EDIT */\n")
@@ -40,7 +40,7 @@ def make_editor_icons_action(target, source, env):
     s.write("static const int editor_icons_count = {};\n".format(len(svg_icons)))
     s.write("static const char *editor_icons_sources[] = {\n")
     s.write(icons_string.getvalue())
-    s.write('};\n\n')
+    s.write("};\n\n")
     s.write("static const char *editor_icons_names[] = {\n")
 
     # this is used to store the indices of thumbnail icons
@@ -63,11 +63,11 @@ def make_editor_icons_action(target, source, env):
 
         if fname != svg_icons[-1]:
             s.write(",")
-        s.write('\n')
+        s.write("\n")
 
         index += 1
 
-    s.write('};\n')
+    s.write("};\n")
 
     if thumb_medium_indices:
         s.write("\n\n")
@@ -91,5 +91,5 @@ def make_editor_icons_action(target, source, env):
     icons_string.close()
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     subprocess_main(globals())