How to create a file name with the current date time in Python

Question

Here is a functional code  create file with success  sys stdout   open  filename1 xml    w    Now I m trying to name the file with the current date time  I m not an expert in Python  filename1   datetime now   strftime  quot  Y m d- H M S quot   sys stdout   open filename1     xml    w    I want to write out a file name with the exact date and time  it is a xml file  that the program has already create  I just need to name the file  The above code is not working  The error returned    File  quot   fix py quot   line 226  in  lt module gt      filenames   datetime now   strftime  quot  Y m d- H M S quot   AttributeError   module  object has no attribute  now

User · Answer

I m surprised there is not some single formatter that returns a default  and safe   for appending in filename  - format of the time   We could simply write FD write  mybackup  time strftime    formatter here       ext      x  instead of   Y m d- H M S

User · Answer

now is a class method in the class datetime in the module datetime  So you need  datetime datetime now     Or you can use a different import  from datetime import datetime   Done this way allows you to use datetime now as per the code in the question

User · Answer

This prints in an easy to read format - import datetime  time now    datetime datetime now   strftime   m  d  Y  H  M  S     print time now   Output  02 03 2021 22 44 50

User · Answer

While not using datetime  this solves your problem  answers your question  of getting a string with the current time and date format you specify   import time timestr   time strftime   Y m d- H M S   print timestr   yields   20120515-155045   so your filename could append or use this string

User · Answer

Change this line  filename1   datetime now   strftime   Y m d- H M S     To  filename1   datetime datetime now   strftime   Y m d- H M S     Note the extra datetime  Alternatively  change your  import datetime to from datetime import datetime

User · Answer

Here s some that I needed to include the date-time stamp in the folder name for dumping files from a web scraper     import time and OS modules to use to build file folder name import time import os     Build string for directory to hold files   Output Configuration     drive letter   Output device location  hard drive       folder name   directory  folder  to receive and store PDF files  drive letter   r D      folder name   r downloaded-files  folder time   datetime now   strftime   Y- m- d  I- M- S  p   folder to save files   drive letter   folder name   folder time     IF no such folder exists  create one automatically if not os path exists folder to save files       os mkdir folder to save files

User · Answer

This one is much more human readable  from datetime import datetime  datetime now   strftime  quot  Y  m  d- I  M  S  p quot     2020 08 12-03 29 22 AM

User · Answer

import datetime  def print time        parser   datetime datetime now        return parser strftime  quot  d- m- Y  H  M  S quot    print print time       Output gt    03-02-2021 22 39 28

[python] How to create a file name with the current date & time in Python?

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