Add color to eyeball output headers

.github/workflows/run-tests.yml

@@ -37,9 +37,12 @@ jobs:
       - name: Run eyeball tests
         if: runner.os != 'Windows'
         run: |
+          pip install termcolor
           PYTHONPATH=. python tests/eyeball.py
 
       - name: Test with pytest
         run: |
           pip install pytest
           pytest tests/ --maxfail=3  --showlocals --color=yes -v
+        env:
+          PY_COLORS: "1"

tests/eyeball.py

@@ -1,6 +1,7 @@
 #!/usr/bin/env python
 # encoding: utf8
 
+import termcolor
 from automata import *
 
 
@@ -15,12 +16,13 @@ def print_header(level, label='', mark=None) -> None:
     rule = (mark * (HEADER_LENGTH//2))[:((HEADER_LENGTH+1-(len(label)+2))//2)]
 
     # Must be outside f-strings to run on Python < 3.12
-    header_text = f"{rule} {label} {rule[::-1]}"[:HEADER_LENGTH]
-    header_start = '\033[1m' if level <= 1 else ''
-    header_end = '\033[0;0m' if level <= 1 else ''
+    header_text = termcolor.colored(f"{rule} {label} {rule[::-1]}"[:HEADER_LENGTH],
+                                    color='green' if level <= 0 else 'dark_grey',
+                                    on_color=None if level <= 0 else 'on_black',
+                                    attrs=['bold', 'dark'] if level <= 0 else ['bold'])
     header_blanks = '\n' if level != 1 else '\n\n'
 
-    print(f"{header_blanks}{header_start}{header_text}{header_end}")
+    print(f"{header_blanks}{header_text}")
 
 
 def eyeball_basic_ca(rule_number: int, initial_conditions: str, base: int,