Python 3.4 Logging Configuration

Question

I am trying to convert my current projects from python 2.7 to 3.5. One of the first tasks is configuration of logging. I use a configuration file for flexibility and the date is part of the file name. Below is the code for setting up the file handler that works fine in 2.7

[handler_fileHandler]
class=FileHandler
level=DEBUG
formatter=simpleFormatter
# Only one log per day will be created. All messages will be appended to it.
args=("D:\\Logs\\PyLogs\\" + time.strftime("%Y%m%d%H%M%S")+'.log', 'a')

In 3.5 the following error occurs:

configparser.InterpolationSyntaxError: '%' must be followed by '%' or '(', found: '%Y%m%d%H%M%S")+\'.log\', \'a\')'

Has anyone experience with this? Is there a better way to format the date within the configuration file?

I'm surprised this worked at all in 2.7. Why not use a TimedRotatingFileHandler though? class=TimedRotatingFileHandler, with when='D'. — Martijn Pieters
– Martijn Pieters, Commented Jul 29, 2016 at 10:28
I didn't use a TimeRotatingFileHandler, because it didn't do what I wanted, but thanks for suggestion. — Bill Kidd
– Bill Kidd, Commented Aug 2, 2016 at 10:03

Community · Accepted Answer · 2017-05-23 12:09:54Z

1

similar subject as this post: Configparser and string with %

I think you may need the substitution for %

edited May 23, 2017 at 12:09

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answered Jul 29, 2016 at 10:21

vivi

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3 Comments

Bill Kidd Over a year ago

I looked at that before and it didn't offer any help

Alicia Garcia-Raboso Over a year ago

Doubling the % did not fix it?

Bill Kidd Over a year ago

Actually it did fix it. I had not tried it because I assumed that it would simply shift the problem from the configparser to time.strftime.

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