tools: Add trace wrapper, and some terminal color for tools display.

src/tools.py

 # -*- coding: utf-8 -*-
 
 import time
+
+from colorama import Fore
+from colorama import Back
+from colorama import Style
+
 from functools import (
     reduce, partial, wraps
 )
@@ -23,7 +28,7 @@ def display_timers():
     global _timers
     global _calls
 
-    print(" +---------------------------------------------------------Timers--+")
+    print(f" +--{Fore.BLUE}Timers{Style.RESET_ALL}---------------------------------------------------------+")
 
     lst = sorted(
         map(
@@ -35,7 +40,7 @@ def display_timers():
     )
 
     for func, time, calls in lst:
-        print(f" | {func:<32} | {time:>10.6f} sec | {calls:>5} calls |")
+        print(f" | {Fore.GREEN}{func:<32}{Style.RESET_ALL} | {time:>10.6f} sec | {calls:>5} calls |")
 
     print(" +-----------------------------------------------------------------+")
 
@@ -65,6 +70,28 @@ def timer(func):
 
     return wrapper
 
+#########
+# DEBUG #
+#########
+
+def trace(func):
+    @wraps(func)
+    def wrapper(*args, **kwargs):
+        t = time.ctime()
+        head = f"[{Fore.BLUE}TRACE{Style.RESET_ALL}]"
+        c = f"{head}[{t}] Call {func.__module__}.{Fore.GREEN}{func.__qualname__}{Style.RESET_ALL}({args}, {kwargs})"
+        print(c)
+
+        value = func(*args, **kwargs)
+
+        t = time.ctime()
+        r = f"{head}[{t}] Return {func.__module__}.{Fore.GREEN}{func.__qualname__}{Style.RESET_ALL}"
+        print(r)
+
+        return value
+
+    return wrapper
+
 ################
 # OTHERS TOOLS #
 ################