python如何簡便的給某段代碼中的print加參數(shù)？

https://stackoverflow.com/que... Redirect stdout to a file in Python? - Stack Overflow

os.dup2標準輸出重定向吧, 調(diào)用func前（或者直接對func使用裝飾器）重定向了，完事兒后再修改回來。

你想表達的是什么意思？file和stream又從哪里來？？字符串參數(shù)化？
比如

def say(name):
    print '{} dont know what the fuck are you talking'.format(name)
say('chosenone')
say('noone')


>>> chosenone dont know what the fuck are you talking
>>> noone dont know what the fuck are you talking

感覺您說的應該是裝飾器@property吧，直接把類方法當成類屬性來使用

貼一段代碼，參考廖學峰的官方網(wǎng)站

class Student(object):

    @property
    def score(self):
        return self._score

    @score.setter
    def score(self, value):
        if not isinstance(value, int):
            raise ValueError('score must be an integer!')
        if value < 0 or value > 100:
            raise ValueError('score must between 0 ~ 100!')
        self._score = value


>>> s = Student()
>>> s.score = 60 # OK，實際轉(zhuǎn)化為s.set_score(60)
>>> s.score # OK，實際轉(zhuǎn)化為s.get_score()
60
>>> s.score = 9999
Traceback (most recent call last):
  ...
ValueError: score must between 0 ~ 100!