Listing all tools for every toolbox in ArcGIS

arcpy_list_toolbox_tools.py

import re
import arcpy
 
for toolbox in arcpy.ListToolboxes():
    wildcard = re.search(r"\((\w+)\)", toolbox).group(1)
    for tool in arcpy.ListTools("*_%s"%wildcard):
        print toolbox, tool, arcpy.Usage(tool)