🌐 Mailman 3 May 2005 - Python-list - python.org

Re: Best way to parse file into db-type layout?
by John Machin May 1, 2005

May 1, 2005

On Sat, 30 Apr 2005 09:23:16 -0400, Steve Holden <steve(a)holdenweb.com> wrote: >John Machin wrote: >[...] >> >> I wouldn't use fileinput for a "commercial data processing" exercise, >> because it's slow, and (if it involved using the Python csv module) it >> opens the files in text mode, and because in such exercises I don't >> often need to process multiple files as though they were one file. >> >If the process runs once a month, and take ten minutes to process the >required data, isn't that fast enough. Depends: (1) criticality: could it have been made to run in 5 minutes, avoiding the accountant missing the deadline to EFT the taxes to the government (or, worse, missing the last train home)? (2) "Many a mickle makes a muckle": the total of all run times could be such that overnight processing doesn't complete before the day shift turns up ... > It's unwise to act as though >"slow" is an absolute term. > >> When I am interested in multiple files -- more likely a script that >> scans source files -- even though I wouldn't care about the speed nor >> the binary mode, I usually do something like: >> >> for pattern in args: # args from an optparse parser >> for filename in glob.glob(pattern): >> for line in open(filename): >> >> There is also an "on principle" element to it as well -- with >> fileinput one has to use the awkish methods like filelineno() and >> nextfile(); strikes me as a tricksy and inverted way of doing things. >> >But if it happens to be convenient for the task at hand why deny the OP >the use of a tool that can solve a problem? We shouldn't be so purist >that we create extra (and unnecessary) work :-), and principles should >be tempered with pragmatism in the real world. If the job at hand is simulating awk's file reading habits, yes then fileinput is convenient. However if the job at hand involves anything like real-world commercial data processing requirements then fileinput is NOT convenient. Example 1: Requirement is, for each input file, to display name of file, number of records, and some data totals. Example 2: Requirement is, if end of file occurs when not expected (including, but not restricted to, the case of zero records) display an error message and terminate abnormally. I'd like to see some code for example 1 that used fileinput (on a list of filenames) and didn't involve "extra (and unnecessary) work" compared to the "for filename in alist / f = open(filename) / for line in f" way of doing it. If fileinput didn't exist, what do you think the reaction would be if you raised a PEP to include it in the core?

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How to track down all required shared libraries?
by sdhyok May 1, 2005

May 1, 2005

Recently, I installed many shared libraries to run a program written in Python. Now, I am in the situation to run the same program but on several different machines with the same Linux OS. To avoid the reinstallation, I like to pack up all shared libraries into a directory. Is there a good way to track down all shared libraries required to run a Python program? Daehyok Shin

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Good morning or good evening depending upon your location. I want to ask you the most important question of your life. Your joy or sorrow for all eternity depends upon your answer. The question is: Are you saved? It is not a question of how good you are, nor if you are a church member, but are you saved? Are you sure you will go to Heaven when you die? GOOGLE·NEWSGROUP·POST·146
by RonGrossi382737＠yahoo.com May 1, 2005

May 1, 2005

The reason some people don't know for sure if they are going to Heaven when they die is because they just don't know. The good news is that you can know for sure that you are going to Heaven which is described in the Holy Bible as a beautiful place with no death, sorrow, sickness or pain. God tells us in the Holy Bible how simple it is to be saved so that we can live forever with Him in Heaven. "For if you confess with your mouth Jesus is Lord and believe in your heart that God raised Him from the dead, you WILL BE SAVED." (Romans 10:9) Over 2000 years ago God came from Heaven to earth in the person of Jesus Christ to shed His blood and die on a cross to pay our sin debt in full. Jesus Christ was born in Israel supernaturally to a virgin Jewish woman named Mary and lived a sinless life for thirty-three years. At the age of thirty-three Jesus was scourged and had a crown of thorns pressed onto His head then Jesus was crucified. Three days after Jesus died on a cross and was placed in a grave Jesus rose from the dead as Jesus said would happen before Jesus died. If someone tells you that they are going to die and in three days come back to life again and it happens then this person must be the real deal. Jesus Christ is the only person that ever lived a perfect sinless life. This is why Jesus is able to cover our sins(misdeeds) with His own blood because Jesus is sinless. The Holy Bible says, "In Him(Jesus) we have redemption through His blood, the forgiveness of sins..." (Ephesians 1:7) If you would like God to forgive you of your past, present and future sins just ask Jesus Christ to be your Lord and Saviour. It doesn't matter how old you are or how many bad things that you have done in your life including lying and stealing all the way up to murder. Just pray the prayer below with your mouth and mean it from your heart and God will hear you and save you. Dear Jesus Christ, I want to be saved so that I can have a home in Heaven with You when I die. I agree with You that I am a sinner. I believe that You love me and want to save me. I believe that You bled and died on the cross to pay the penalty for my sins and that You rose from the dead. Please forgive my sins and come into my heart and be my Lord and Saviour. Thanks Lord Jesus Christ for forgiving me and saving me through Your merciful grace. Amen. Welcome to the family of God if you just allowed God to save you. Now you are a real Christian and you can know for sure that you will live in Heaven forever when this life comes to an end. As a child of God we are to avoid sin(wrongdoing), but if you do sin the Holy Bible says, "My dear children, I write this to you so that you will not sin. But if anybody does sin, we have one who speaks to the Father in our defense Jesus Christ, the Righteous One." Those of you that have not yet decided to place your trust in the Lord Jesus Christ may never get another chance to do so because you do not know when you will die. Jesus said, "I am the way, the truth and the life: no one can come to the Father(God)(in Heaven), but by me." (John 14:6) This means that if you die without trusting in Jesus Christ as your Lord and Saviour you will be forever separated from the love of God in a place called Hell. The Holy Bible descibes Hell as a place of eternal torment, suffering, pain and agony for all those who have rejected Jesus Christ. The good news is that you can avoid Hell by allowing Jesus Christ to save you today. Only then will you have true peace in your life knowing that no matter what happens you are on your way to Heaven. Praise the Lord! Servant of the Lord Jesus Christ Ronald L. Grossi *Show this to your family and friends so they can know that they have a choice where they will spend eternity. Thanks! ____________________________________________________ Got Questions? http://www.gotquestions.org/archive.html Other Languages http://www.godssimpleplan.org/gsps.html Free Movie: To Hell and Back http://www.tbn.org/index.php/8/1.html Animation http://www.gieson.com/Library/projects/animations/walk/index.html The Passion Of The Christ http://www.thepassionofthechrist.com Beware Of Cults http://www.carm.org/cults/cultlist.htm About Hell http://www.equip.org/free/DH198.htm Is Jesus God? http://www.powertochange.com/questions/qna2.html Free Online Bible http://www.biblegateway.com ____________________________________________________

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Tkinter weirdness item count
by phil May 1, 2005

May 1, 2005

>> Using Tkinter Canvas to teach High School Geometry >> with A LOT of success. >Can you post a link to your code. >I'd like to see what you are doing. >Thx, >Alan Isaac Yes, I will release it open source at the end of may. There are too many features I want to add to release it now. Essentially it is a script language for making complex drawings, rotating objects, plotting simple functions, and with a dialogue. Which means you can make a simple concept or a whole chapter into a lesson. Eventually I will write a whole course based on Cliff notes geometry review. Why, are you a teacher?

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