Python How to Program Pt 5

Python How To Video : Here I show you how to read from and write to files with Python. Also, go over a bunch of other tricks along the way.

[derekbanas]

If you can read and understand a file type with your eyes then you can teach a program to do the same thing with regular expressions. I have a bunch of regular expression tutorials that will help you learn that topic

[derekbanas]

A couple things could cause a problem. One thing is that you need to make sure the whitespace is used the right way. Also, you may have to do a find and replace to change the backquotes into normal quotes. That was an old security feature I used to have to use. Tell me if that helps, or not

[derekbanas]

@CoreOFDeath007 Eclipse is the editor you enter the code into. Python compiles and executes the code

[derekbanas]

Thank you :) I appreciate your kind words

[derekbanas]

Thank you very much :) A ton more Java videos are in the works. The next one will come out tomorrow.

I doubt I'll ever be that big though, but that is ok

[derekbanas]

I'm going to address some of these PC issues and also do a tutorial on setting up python on a pc. Thank you for your patience :)

[derekbanas]

Anything you can do manually can be done by teaching the computer what to look for using regular expressions. You'll just have to break the process down into a series of steps to accomplish that. I use UML to make stuff like you are describing. My UML tutorials may help you better understand the process. I wish you luck with your project

[derekbanas]

@supercaleb08 If you copied the code from the website do a find replace to turn all back quotes into regular quotes. You shouldn't have any problems after that.

[UCBCteam]

you are going to next youtube big thing Derek... God bless you... you are a life saver espically in you new java videos i've seen all of these 37 and looking forward for no 38 and onwards... thanks a ton buddy... i really love your videos....

[stcentdigital]

Firstly, thanks 4 your very swift response. Things that I found:
*I was guilty of a few typos - hence why code didnt work
*Windows/Python backslash compatibility issue: ‘Your file name has backslash characters in it. Backslash is the escape character in Python strings. Either replace them with '/' characters or use
*Changed single inverted commas into double inverted commas. This got strings to turn green whereas single inverted commas didnt have this effect.

[gent]

Thats what I'm talkin bout homey. Love it. Simple but effective.

[derekbanas]

Thank you :) I'm writing to text (txt) files. Check to make sure the files are being created in your directory. You may have a permissions issue if you are on Windows and they aren't showing up. That just means you'll need to install Python outside of your Program Files directory. Something like c:\Python will work

[derekbanas]

My java tutorial shows you how to make games. Before the end of the year Ill be starting a large game development tutorial

[derekbanas]

@SpruzoEntertainment Thank you. I'm not that popular on YouTube, but thats ok :)

[derekbanas]

Great! I'm glad to have been of help :)

[derekbanas]

@tomismore I'm glad you like them :) I have the code on my newthinktank site for free. If you send me an email in a yt tube message I can send you the code. The error is probably coming from an error some where else in the code.

[derekbanas]

Save it in the same directory as your python file

[JoM]

You're doing a great job!  I appreciate these tutorials!

[derekbanas]

Look for this tutorial for file stuff Python 2.7 Tutorial Pt 10. REGEX Tutorial Regular Expressions covers regex in python. They are both on my YouTube channel. I hope they help

[ThatPortgueseKid]

f = open('studentgrades.txt')
for line in f:
    print(line, end="")
f.close()

this is the exact code ive been using in eclipse (yes i have pydev installed and everything) but i get a syntax error saying that "=" is an incorrect syntax) I'am using python 3.3 so maybe there is something else I'am suppose to type.

thanks a lot Derek you've been helping me prepare for university with the other videos.