lilydjwg · September 27, 2025 11:46 · Jul 25, 2020 · Jul 22, 2020 · Jun 9, 2020
diff --git a/colors.py b/colors.py
@@ -64,9 +64,10 @@ def colors_gradient():
 def other_attributes():
   for i in range(0, 10):
     print(f' \x1b[{i}mSGR {i:2}\x1b[m', end=' ')
+  print(' \x1b[53mSGR 53\x1b[m', end=' ') # overline
   print('\n')
   # https://askubuntu.com/a/985386/235132
-  for i in range(1, 4):
+  for i in range(1, 6):
     print(f' \x1b[4:{i}mSGR 4:{i}\x1b[m', end=' ')
   print(' \x1b[21mSGR 21\x1b[m', end=' ')
 

diff --git a/colors.py b/colors.py
@@ -63,8 +63,15 @@ def colors_gradient():
 
 def other_attributes():
   for i in range(0, 10):
-    print(f'\x1b[{i}m SGR {i:2}\x1b[m', end=' ')
+    print(f' \x1b[{i}mSGR {i:2}\x1b[m', end=' ')
   print('\n')
+  # https://askubuntu.com/a/985386/235132
+  for i in range(1, 4):
+    print(f' \x1b[4:{i}mSGR 4:{i}\x1b[m', end=' ')
+  print(' \x1b[21mSGR 21\x1b[m', end=' ')
+
+  print(' \x1b[4:3m\x1b[58;2;135;0;255mtruecolor underline\x1b[59m\x1b[4:0m', end=' ')
+  print(' \x1b]8;;https://askubuntu.com/a/985386/235132\x1b\\hyperlink\x1b]8;;\x1b\\')
 
 if __name__ == '__main__':
   print('basic 16 colors, foreground & background:\n')

diff --git a/colors.py b/colors.py
@@ -0,0 +1,92 @@
+#!/usr/bin/python3
+
+from functools import partial
+
+def colors16():
+  for bold in [0, 1]:
+    for i in range(30, 38):
+      for j in range(40, 48):
+        print(f'\x1b[{bold};{i};{j}m {bold};{i};{j} |\x1b[0m', end='')
+      print()
+    print()
+
+  for bold in [0, 1]:
+    for i in range(90, 98):
+      for j in range(100, 108):
+        print(f'\x1b[{bold};{i};{j}m {bold};{i};{j} |\x1b[0m', end='')
+      print()
+    print()
+
+def color1(c, n=0):
+  print(f'\x1b[{n};38;5;{c}m{c:4}\x1b[0m', end='')
+
+def color1_sep(c):
+  if (c - 15) % 18 == 0:
+    print()
+
+def color2(c):
+  print(f'\x1b[48;5;{c}m  \x1b[0m', end='')
+
+def color2_sep(c):
+  if (c - 15) % 36 == 0:
+    print()
+  elif (c - 15) % 6 == 0:
+    print(' ', end='')
+
+def colors256(color, sepfunc):
+  for i in range(0, 8):
+    color(i)
+  print()
+  for i in range(8, 16):
+    color(i)
+  print('\n')
+
+  for i in range(16, 232):
+    color(i)
+    sepfunc(i)
+  print()
+
+  for i in range(232, 256):
+    color(i)
+  print('\n')
+
+def colors_gradient():
+  s= '/\\' * 40
+  for col in range(0, 77):
+    r = 255 - col * 255 // 76
+    g = col * 510 // 76
+    b = col * 255 // 76
+    if g > 255:
+      g = 510 - g
+    print(f'\x1b[48;2;{r};{g};{b}m\x1b[38;2;{255-r};{255-g};{255-b}m{s[col]}\x1b[0m', end='')
+  print()
+
+def other_attributes():
+  for i in range(0, 10):
+    print(f'\x1b[{i}m SGR {i:2}\x1b[m', end=' ')
+  print('\n')
+
+if __name__ == '__main__':
+  print('basic 16 colors, foreground & background:\n')
+  colors16()
+
+  print('256 colors:\n')
+  colors256(color1, color1_sep)
+
+  print('256 colors, bold:\n')
+  colors256(partial(color1, n=1), color1_sep)
+
+  print('256 colors, dim:\n')
+  colors256(partial(color1, n=2), color1_sep)
+
+  print('256 colors, bold dim:\n')
+  colors256(partial(color1, n='1;2'), color1_sep)
+
+  print('256 colors, solid background:\n')
+  colors256(color2, color2_sep)
+
+  print('true colors gradient:\n')
+  colors_gradient()
+
+  print('other attributes:\n')
+  other_attributes()