Pytion 006 len range

# -*- coding: cp936 -*-
#D:\workspace\Pytion_workspace\004_list.py

sCollege=1231
#=================len()   range()========
print 'len() 和 range()函数'
print len(sCollege)
print range(len(sCollege))

#=================exec ================
nStudentNum='2084120019'
print 'Dynamic exec cmd:'
sCmd1='print nStudentNum'
exec(sCmd1)