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4409 - Setting up and using a dict in Python - simple first example
Here's a very short and easy example of the use of a dict in Python. Set up a dict and fill it from a file (key value is 2nd field; value to be looked at is 7th)   lookup = {}   for record in open("railstats.txt","r"):     fields = record.strip().split('\t') ....

4408 - Additional Python courses added to our schedule
Extra public Python courses - at our Melksham, Wiltshire training centre. • Learning to Program in Python, starting on Monday 2nd March 2015. 5 days, for delegates without (much) prior programming experience. - £1350.00 (day delegate) or £1700.00 (including overnight accommodatio ....

4407 - Python - even named code blocks are objects
In Python, "everything is as object" and objects / variables share the same data storage area and naming convention if they're "classic" variables containing data values used in your program, or if they're names pieces of code (functions or methods). That sharing gives a great power in facilities ....

4406 - Fixing damaged MySQL tables - Error 1712 and Error 2013
ERROR 1712 (HY000): Index smf_messages is corrupted ERROR 2013 (HY000): Lost connection to MySQL server during queryA mysqldump: Error 2013: Lost connection to MySQL server during query when dumping table `smf_messages` at row: 135457 Oops ... I don't know what to say ... "Don't Panic" in the wor ....

4405 - Backup procedures - via backup server
Our main web server system becomes ever more important to our business - and having procedures in place to restore systems in the event of failure becomes ever more critical. What are we protecting against? Both hardware and software failures, and against intrusions and obsolescence (to the extent ....

4404 - Which (virtual) host was visited? Tuning Apache log files, and Python analysis
We host a number of domains on our main server, and in order to avoid fragmentation of log files, we keep a sinle composite log. Rather than use a standard logfile format henceforth, I've changed the second field to carry the virtual host name accessed for the request, as that was missing up until ....

4403 - The unbalanced relationship between customer and provider
A friend describes how he returned from Paddington late one afternoon, when the station and trains were busy, and was delayed by two hours by staff who refused to accept his ticket, even though it was valid. He felt uncomfortable - threatened by staff who at one point even called in a "Gorilla" to ....

4402 - Finding sum, minimum, maximum and average in Python (and Ruby)
A fresh example (in Python) from today's "learning to program in" course ... finding the number, sum, minimum and maximum of a series of numbers typed in. See [here]. We start off with zero for the count and sum to date, but we do not initialise the minimum or the maximum as we don't know what the ....

4401 - Selecting RECENT and POPULAR news and trends for your web site users
How do we give people recent news, or talk about recent trends or popular posts>? The obvious answer is to take data for the last "n" days or months and analyse that. But whilst that's the obvious answer, it's also obviously a fairly crude measure as it gives undue influence as it changes to what h ....

4400 - Commenting out an echo killed my bash backup script
"Commenting out an echo killed my bash script" - yes, really! Here (with password amended!) is part of my bash script which takes a database snapshot from time to time - and it's been running well over a 24 hour cycle, giving me checkpoints to return to. But it was getting a bit verbose, so I adde ....

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