在Python中打开/关闭打印语句的高效方法？ [英] Efficient way of toggling on/off print statements in Python?

问题描述

我有10或15个非常有用的调试 print 在我的程序中（在不同的功能和 main ）。

I have 10 or 15 very useful debugging print statements sprinkled throughout my program (in different functions and in main).

我不会总是想要或需要日志文件。我有一个配置文件，我可以添加一个参数来打开或关闭打印语句。但是，我必须在每个打印声明之上添加一个这个参数值的保护检查。

I won't always want or need the log file though. I have a config file in which I could add a parameter to toggle print statements on or off. But then, I'd have to add a guard check for the value of this parameter above every print statement.

什么是更好的方法？ $ b

What are some better approaches?

推荐答案

from __future__ import print_function
enable_print = 0

def print(*args, **kwargs):
    if enable_print:
        return __builtins__.print(*args, **kwargs)

print('foo') # doesn't get printed
enable_print = 1
print('bar') # gets printed

不幸的是你不能保留py2打印语法 print'foo'

sadly you can't keep the py2 print syntax print 'foo'

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