black formatting

waves.py

@@ -6,7 +6,6 @@ from datetime import datetime
 import calendar
 import random
 import colorsys
-from utils import random_color
 
 
 # dimensions of the output image
@@ -17,8 +16,9 @@ DARK_BG = True
 # precision of the calculation
 PRECISION = 10000
 
+
 def get_color_from_date(date: datetime) -> tuple[float, float, float]:
-    '''Return a color based on the progress through the year.'''
+    """Return a color based on the progress through the year."""
     # a day between 1 and 365 (inclusive)
     today = date.timetuple().tm_yday
     days_in_year = 365 + calendar.isleap(date.year)
@@ -26,13 +26,17 @@ def get_color_from_date(date: datetime) -> tuple[float, float, float]:
     progress = today / days_in_year
     return colorsys.hsv_to_rgb(progress, 1, 0.9)
 
+
 def get_amplitude_from_date(date: datetime, waves) -> float:
-    '''Return the amplitude of waves, based on progress through the month.'''
+    """Return the amplitude of waves, based on progress through the month."""
     days_in_month = calendar.monthrange(date.year, date.month)[1]
     max_amp = 1 / waves / 2
     return date.day / days_in_month * max_amp
 
-def create_wpotd(width: int, height: int, date: datetime = datetime.now(), dark: bool = True) -> cairo.ImageSurface:
+
+def create_wpotd(
+    width: int, height: int, date: datetime = datetime.now(), dark: bool = True
+) -> cairo.ImageSurface:
     surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height)
     ctx = cairo.Context(surface)
 
@@ -48,12 +52,12 @@ def create_wpotd(width: int, height: int, date: datetime = datetime.now(), dark:
     r, g, b = get_color_from_date(date)
     alpha_step = 1 / waves
 
-    ctx.rectangle(0, 0, 1, 1)
+    # background color
     if dark:
-        # make bg black
         ctx.set_source_rgb(0, 0, 0)
     else:
         ctx.set_source_rgb(255, 255, 255)
+    ctx.rectangle(0, 0, 1, 1)
     ctx.fill()
 
     wave_height = 1 / waves
@@ -85,9 +89,11 @@ def create_wpotd(width: int, height: int, date: datetime = datetime.now(), dark:
     return surface
     # surface.write_to_png(output)  # Output to PNG
 
+
 def main():
     output = create_wpotd(1920, 1080, dark=False)
-    output.write_to_png('out/waves.png')
+    output.write_to_png("out/waves.png")
+
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     main()