arcpy获得工具箱工具的个数

import  arcpy
import  string
##多少个工具箱
toolboxes = arcpy.ListToolboxes()
for toolbox in toolboxes:
    #截取工具箱的别名
    #arcpy.AddMessage("=====" + toolbox)

    first=toolbox.index("(") ##第一个'('的索引值
    #arcpy.AddMessage("first=" + str(first))
    end = toolbox.index(")")    ##最后一个')'的索引值
    #arcpy.AddMessage("end=" + str(end))
    toolboxAlias=toolbox[first+1:end] ##工具箱的别名
    #arcpy.AddMessage("toolboxAlias=" + toolboxAlias)
    i = 0
    tools = arcpy.ListTools()
    for tool in tools:
        f=tool.index("_") ##"_"的索引值
        #arcpy.AddMessage(tool+":"+str(f))
        alias=tool[f+1:]
        #arcpy.AddMessage(tool + ":" + alias)
        if alias==toolboxAlias:
            arcpy.AddMessage(tool)
            i=i+1
    arcpy.AddMessage(  "====="+toolbox+"'s count:"+str(i))
arcpy.AddMessage( "the tool count:"+str( len(tools))) 
arcpy.AddMessage(  "the toolbox count:"+str(len(toolboxes)))