try-except-as-else pwd example-python 與自訂例外類別

try-except-as-else.py

Class PwdException(Exception):
    def _init_(self,pwd,len):
        super(). _init_(self)  #呼叫基礎類別
        self.pwd = pwd
        self.len = len

try:
    pwd = input('請輸入密碼，長度至少為8個字元')
    if len(pwd) < 8:
        raise PwdException(pwd,len(pwd))
except EOFError:
        print('輸入EOF')
except.PwdException as pex:
    print('密碼',pex.pwd,'長度為',pex.len,'密碼長度不足')
else:
    print('輸入長度為',pwd)