python中For循环

打印出1到100的数，不包含100
for i in range(1,100):
if i==23:
print "great,you got your luncky number:",i
print 'The unmber is:',i
================23会被重复打印===============================
for i in range(1,100):
    if i==23:
           print "great,you got your luncky number:",i
    else:
           print "The unmber is:",i
================23只会打印一次===============================
for i in range(1,100):
 if i==23:
 print "great,%s lucky number:"%i  #%s，引用外部的变量；外部的变量则为：引号之外的变量
 print "The number is:",i