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1. Top results related to define log files in python programming pdf

   • Log from multiple python files into single log file in Python

     Top Answer

     Answered Aug 15, 2017 · 8 votes

     You can do that using the logging module. Define this function in one of your base modules, and call it in every module you would like to log something.

     import loggingdef get_logger(name): log_format = '%(asctime)s %(name)8s %(levelname)5s %(message)s' logging.basicConfig(level=logging.DEBUG, format=log_format, filename='dev.log', filemode='w') console = logging.StreamHandler() console.setLevel(logging.DEBUG) console.setFormatter(logging.Formatter(log_format)) logging.getLogger(name).addHandler(console) return logging.getLogger(name)

     Then from every module you want to log from, call this function with the logger name you want, and all your modules would print to the same log file defined by the filename argument.

     <base.py>logger = get_logger('base')logger.info('testing logger from module base')-<module2.py>logger = get_logger('module2')logger.info('testing logger from module module2')<dev.log>2017-08-11 00:34:00,361 base INFO testing logger from module base2017-08-11 00:34:00,361 module2 INFO testing logger from module module2

     logging.basicConfig()

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     1/5

   • Programming in Python: Getting "name 'Tk' is not defined" only at Command Prompt, works in IDLE

     Top Answer

     Answered Apr 12, 2020 · 13 votes

     The solution that I found is that do not give the name of your file tkinter.

     Other Answers

     Answered Nov 26, 2011 · 7 votes

     Works fine in my computer .

     Since You said : NameError: name 'tk' is not defined.

     here tk with a small 't'

     You might have written

     root = tk()

     instead of :

     root = Tk()

     Check Capital 'T'

     Other Answers

     Answered Jul 11, 2016 · 5 votes

     I suppose this is something to do with

     • the python version one is using
     • how you basically imported the library

     For python 2.x use this

     from Tkinter import *root = Tk()root.mainloop()

     OR

     from tkinter import *root = tkinter()root = mainloop()

     Check all answers on Stack Overflow

     2/5

   • Reading .log files in python

     Top Answer

     Answered Sep 11, 2019 · 4 votes

     Let's say you have a file (file.log) with the content:

     Date/Time: 2019-09-11 13:11:48 Global Freq. Table [Ticks @ 82.3045ps] -1215 : 56 -1214 : 192 -1213 : 105 -1212 : 375 -1211 : 230Date/Time: 2019-09-11 13:11:48 Global Freq. Table [Ticks @ 82.3045ps] -1215 : 56 -1214 : 192 -1213 : 105 -1212 : 375 -1211 : 230Date/Time: 2019-09-11 13:11:48 Global Freq. Table [Ticks @ 82.3045ps] -1215 : 56 -1214 : 192 -1213 : 105 -1212 : 375 -1211 : 230-

     First you open the file:

     file = open('file.log', 'r')-

     You read all the lines from the file, and then you close it:

     lines = file.read().splitlines()file.close()-

     Since the columns are clearly separated by the : character, it's simple to get each column separately:

     for line in lines: if not line: continue- columns = [col.strip() for col in line.split(':') if col] # do something

     Now the column variable contains all the columns you needed.

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     3/5

   • Reading log files in python

     Top Answer

     Answered Mar 25, 2021 · 2 votes

     Try this way. but you have to confirm that each row list length must equal to 6.

     list1 = []list2 = []with open('example.log') as f: for i in f.readlines(): if (len(i.split(',')) == 6): list1.append(i.split(',')[4]) list2.append(i.split(',')[5])print(list1)print(list2)

     Check all answers on Stack Overflow

     4/5

   • Python: Log to multiple log files

     Top Answer

     Answered Feb 28, 2013 · 3 votes

     What you /could/ do (I haven't dug into the logging module too much so there may be a better way to do this) is maybe use a stream rather than a file object:

     In [1]: class LogHandler(object): ...: def write(self, msg): ...: print 'a :%s' % msg ...: print 'b :%s' % msg ...: In [3]: import loggingIn [4]: logging.basicConfig(stream=LogHandler())In [5]: logging.critical('foo')a :CRITICAL:root:foob :CRITICAL:root:fooIn [6]: logging.warn('bar')a :WARNING:root:barb :WARNING:root:bar

     Edit with further handling:

     Assuming your log files already exist, you could do something like this:

     import logging-class LogHandler(object): format = '%(levelname)s %(message)s' files = { 'ERROR': 'error.log', 'CRITICAL': 'error.log', 'WARN': 'warn.log', } def write(self, msg): type_ = msg[:msg.index(' ')] with open(self.files.get(type_, 'log.log'), 'r+') as f: f.write(msg)logging.basicConfig(format=LogHandler.format, stream=LogHandler())logging.critical('foo')

     This would allow you to split your logging into various files based on conditions in your log messages. If what you're looking for isn't found, it simply defaults to log.log.

     Check all answers on Stack Overflow

     5/5

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2. www.machinelearningplus.com · python · pythonPython Logging – Simplest Guide with Full Code and Examples

   www.machinelearningplus.com · python · python

   

   The 5 levels of logging. How to log to a file instead of the console. How to change the logging format. Why working with the root logger for all modules isn’t the best idea. How to create a new logger? What is and How to setup a File Handler and Formatter? How to include traceback information in logged messages. Exercises. Conclusion. 1.

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4. stackoverflow.com · questions · 49580313python - Create a log file - Stack Overflow

   stackoverflow.com · questions · 49580313

   

   You just have to define a python module for logging using python internal logging module. You can define as many logger as you want. You can also configure it to print the output to a console as well write to a file.

5. scicomp.ethz.ch · public · manualLogging Cookbook - ETH Z

   scicomp.ethz.ch · public · manual

   

   Logging Cookbook. Release 3.6.0. Guido van Rossum and the Python development team. Contents. Using logging in multiple modules 2. Logging from multiple threads 4. Multiple handlers and formatters 5. Logging to multiple destinations 5. Configuration server example 6.

6. www.geeksforgeeks.org · create-a-log-file-in-pythonCreate a Log File in Python - GeeksforGeeks

   www.geeksforgeeks.org · create-a-log-file-in-python

   

   Feb 23, 2024 · In Python, creating log files is a common practice to capture valuable information during runtime. Log files provide a detailed record of events, errors, and other relevant information, aiding in debugging and performance analysis. In this article, we will see how we can create a log file in Python.

7. realpython.com · python-loggingLogging in Python – Real Python

   realpython.com · python-logging

   

   Jul 22, 2024 · Set up a basic logging configuration. Leverage log levels. Style your log messages with formatters. Redirect log records with handlers. Define logging rules with filters. When you log useful data from the right places, you can debug errors, analyze the application’s performance to plan for scaling, or look at usage patterns to plan for marketing.

8. docs.python.org · 3 · howtoLogging HOWTO — Python 3.12.6 documentation

   docs.python.org · 3 · howto

   

   You can access logging functionality by creating a logger via logger = getLogger(__name__), and then calling the logger’s debug(), info(), warning(), error() and critical() methods. To determine when to use logging, and to see which logger methods to use when, see the table below.

9. docs.python.org · 3 · howtoLogging Cookbook — Python 3.12.6 documentation

   docs.python.org · 3 · howto

   

   Loggers are plain Python objects. The addHandler () method has no minimum or maximum quota for the number of handlers you may add. Sometimes it will be beneficial for an application to log all messages of all severities to a text file while simultaneously logging errors or above to the console.