Python的输出函数问题

print"This is my first profram!"
name=raw_input("Please enter your name:")
sex=raw_input("Please enter your sex(man or wowan):")
global age
age=input('Please input your age:')
def fage(age):
if age>=18:
print'an adult',age
elif age>=6:
print'a teenager',age
else:
print'a kid',age
def fsex(sex,name):
if sex=='man':
print'Mr.',name
else:
print'Ms.',name
print'Hello',fsex(sex,name),'You are',fage(age)
结果输出的是这个
This is my first profram!
Please enter your name:www
Please enter your sex(man or wowan):man
Please input your age:14
Hello Mr. www
None You are a teenager 14
None
>>>
怎么把none去除掉呢？