Python学习入门基础教程(learning Python)--3.3.4 Python的if-elif-else语句
Python的if-elif-else语句用于多种条件判断后选择某个语句块执行。该语句可以利用一系列条件表达式进行检查，并在某个表达式为真的情况下执行相应的代码。需要注意的是，虽然if/elif/else语句的备选动作较多，但是有且只有一组动作被执行。view plaincopy
[*] def if_check(x):
[*] print("your sex : ", x)
[*] if x == "male"or x == "m"or x == "b":
[*] print(" Gentleman")
[*] elif x == "female"or x == "f"or x == "g":
[*] print(" Lady")
[*] elif x == "":
[*] print(" you need input")
[*] else:
[*] print(" Xiao shenyang?")
[*]
[*] def main():
[*] sex = raw_input("plz input your sex(male/m/b, female/f/g): ")
[*] if_check(sex)
[*]
[*] x = 12
[*] main()
程序运行结果如下面两个图所示。http://img.blog.csdn.net/20130629162304046?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvdTAxMTAwMDUyOQ==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
http://img.blog.csdn.net/20130629162321265?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvdTAxMTAwMDUyOQ==/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
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