11.你输入的参数全部是数字，计算所有数字参数的累计和

#encoding=utf-8

import sys

sum=0

for i in sys.argv[1:]:

    try:

        number=float(i)

    except:

        continue

    sum+=number

print sum

 

 

      #encoding=utf-8

import sys

letter_count=0

for i in sys.argv[1:]:

          if i.isdigit():

             letter_count+=float(i)

 

print letter_count