top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

Python: @staticmethods called more than once

0 votes
303 views

I'm somewhat confused working with @staticmethods. My logger and configuration methods are called n times, but I have only one call.
n is number of classes which import the loger and configuration class in the subfolder mymodule. What might be my mistake mistake?

### __init__.py ###

from mymodule.MyLogger import MyLogger
from mymodule.MyConfig import MyConfig

##### my_test.py ##########
from mymodule import MyConfig,MyLogger

#Both methods are static
key,logfile,loglevel = MyConfig().get_config('Logging')
log = MyLogger.set_logger(key,logfile,loglevel)
log.critical(time.time())

#Output
2013-05-21 17:20:37,192 - my_test - 17 - CRITICAL - **********.19
2013-05-21 17:20:37,192 - my_test - 17 - CRITICAL - **********.19
2013-05-21 17:20:37,192 - my_test - 17 - CRITICAL - **********.19
2013-05-21 17:20:37,192 - my_test - 17 - CRITICAL - **********.19
posted May 21, 2013 by anonymous

Share this question
Facebook Share Button Twitter Share Button LinkedIn Share Button

1 Answer

0 votes

Dont confuse the use of "static" in Python with its use in C/C++.
From a post on StackOverflow: A staticmethod is a method that knows nothing about the class or instance it was called on. It just gets the arguments that were passed, no implicit first argument. It is basically useless in Python -- you can just use a module function instead of a staticmethod.
That is, the "@staticmethod" decorator doesnt mean, "call this function once."

answer May 21, 2013 by anonymous
Similar Questions
+2 votes
Python: Searching through more than one file.

I need to search through a directory of text files for a string. Here is a short program I made in the past to search through a single text file for a line of text.

How can I modify the code to search through a directory of files that have different filenames, but the same extension?

fname = raw_input("Enter file name: ") #"*.txt"
fh = open(fname)
lst = list()
biglst=[]
for line in fh:
 line=line.rstrip()
 line=line.split()
 biglst+=line
final=[]
for out in biglst:
 if out not in final:
 final.append(out)
final.sort()
print (final)
+2 votes
Can a pointer be freed more than once in C?

What happens if do so? Or can a pointer be freed twice in C?

+2 votes
Python: Importing pyc files without py files takes more time?

I have an application which uses extensively python 2.7.6 (CPython).

The issue that I see is the following: "If there are only pyc files, the loading time of the application is much more than if I have pyc and py files. It is behind with 2 minutes more than if it had py files"

Do you have any idea why this is happening?

0 votes
Python: time.sleep(n) would sleep much longer than n seconds?

I'm writing some scripts with python, and I found sometimes, when I try to use time.sleep(1) to sleep 1 sec, it would actually sleep for 9/10 secs or even longer.

From python document, I saw this:

time.sleep(secs)
....
"Also, the suspension time may be longer than requested by an arbitrary amount because of the scheduling of other activity in the system."

So, my question: under what kind of condition, time.sleep would suspend longer time than expected?

+3 votes
How we can force a function to be called only once.

How we can force a function to be called only once. I can do this using some static variable or using boost library, but is there some other way to do this as I don't want to use any of the earlier way. Function is a non member function of any class.

...