Python built-in function print output to file for logging functions

# bulid time 2018-6-22import osimport timedef log (*args, **kwargs):  # *kargs do not pass    rule = "%y/%m/%d  %h:%m:% for general purposes" S "  # definition Format    value = time.localtime (int (time.time ()))  # conversion time    dt = time.strftime (rule, value)   #  According to the rule conversion time with    open ("./log", "a") as F:   # Open File  writes the output data of the print function to the file            print (dt, *args, File=f, **kwargs) def main (): while True:    a = input ("Please enter:")    if a = = "Q":        log (__file__)        log (Os.path.dirname ("/home/ kali/desktop/log.py ")  # No data        log (Os.path.abspath (Os.path.dirname (__file__)) # Get the current path        log (__name_ _) # __name__        log (Os.path.abspath (__file__)) #当前文件绝对路径        log (Os.path.dirname (Os.path.dirname ( Os.path.abspath (__file__)))          log (os.path.join) break    log (a) if __name__ = = "__main__": Main ()

Python built-in function of the file parameter, you can implement the output to write files, and no longer terminal display, looked at the print document introduction, wrote a small demo, by the way also learned about os.path.*, and the time module, good good!

Function Description: Get input, write to file, enter "Q", exit. A small script that can be used as a logging

Generate the Logt.txt file in the current directory

The effect is as follows:

2018/07/18 18:36:46 Hello world!
2018/07/18 18:37:00 life are short, you need python!
2018/07/18 18:37:02 log.py
2018/07/18 18:37:02/home/kali/desktop
2018/07/18 18:37:02/home/kali/desktop
2018/07/18 18:37:02 __main__
2018/07/18 18:37:02/home/kali/desktop/log.py
2018/07/18 18:37:02/home/kali
2018/07/18 18:37:02 <function Join at 0x7f1c5c206268>

Python built-in function print output to file for logging functions