Schedule

Schedule

Sunday, April 19

1429466400 The Tech Guy
1429480800 This Week in Tech

Monday, April 20

1429549200 Tech News Today
1429552800 Triangulation
1429558200 iPad Today
1429565400 Coding 101
1429570800 Tech News 2Night

Tuesday, April 21

1429635600 Tech News Today
1429639200 MacBreak Weekly
1429648200 Security Now
1429657200 Tech News 2Night
1429660800 All About Android

Wednesday, April 22

1429716600 FLOSS Weekly
1429722000 Tech News Today
1429725600 Windows Weekly
1429732800 This Week in Google
1429743600 Tech News 2Night
1429745400 Android App Arena
1429750800 Ham Nation

Thursday, April 23

1429808400 Tech News Today
1429812000 Know How...
1429817400 Marketing Mavericks
1429822800 Home Theater Geeks
1429830000 Tech News 2Night
1429831800 The Giz Wiz

Friday, April 24

1429894800 Tech News Today
1429898400 This Week in Law
1429909200 Before You Buy
1429916400 Tech News 2Night

Saturday, April 25

1429984800 The Tech Guy

Sunday, April 26

1430071200 The Tech Guy
1430085600 This Week in Tech

Monday, April 27

1430154000 Tech News Today
1430157600 Triangulation
1430163000 iPad Today
1430170200 Coding 101
1430175600 Tech News 2Night

Tuesday, April 28

1430240400 Tech News Today
1430244000 MacBreak Weekly
1430253000 Security Now
1430262000 Tech News 2Night
1430265600 All About Android

Most Recent Episodes

The Tech Guy
The Tech Guy 1179 April 18th, 2015

Can I still back up off-site when internet connection is unreliable?

Before You Buy

First looks at the 3DR Solo Drone and Sony HDR 4K Monitors at NAB.

This Week in Enterprise Tech

AT&T suing the FCC, Skype for Business, and Android is ready for work.

Tech News 2Night

What's so great about Slack?

This Week in Law

Co-founder of Invisible Girlfriend Matt Homann and crowd-sourced labor.

Tech News Today

Google now shows Apps in search results, on Android devices.

This Week in Computer Hardware

Intel Skylake Leaks!

The Giz Wiz

Onewheel, ThinkPad Stacks, Epson HD Whiteboard, and more.

Tech News 2Night

The best apps for your messy digital life

Home Theater Geeks
Episode #252: NAB 2015 April 16th, 2015

The latest and greatest from NAB 2015

Coding 101 16

Python - The External Data Circle of Life

May 8 2014

Hosts: Fr. Robert Ballecer, SJ and Shannon Morse

Guest: Dale Chase

Welcome to Coding 101 - It's the TWiT show that gives YOU the knowledge to live in the wonderful world of the programmer. This week we are introducing our newest module, Python with Code Warrior Dale Chase!

To see all the code used in today's episode, go to Our Github Repository for Module 2

Ivory Tower: External File IO

Using external data reqires knowledge of four functions: "open()", "
read()", "write()" and "close()"

open()
This function opens a file with the flags and mode of your choosing. For simplicity, we're only using the "r" "w" modes.
-- The "r" mode opens a file for "read only" use
-- The "w" mode blanks the file prepares to write to the file
* Note that this function DOES NOT READ THE FILE INTO A VARIABLE.

USAGE:
text_file = open("/Users/PadreSJ/Desktop/C101-16/write.txt", "r")
# This opens a file called "write.txt" in READ-ONLY mode and sets the pointer in variable "text_file"

text_file = open("/Users/PadreSJ/Desktop/C101-16/write.txt", "w")
# This opens a file called "write.txt" in WRITE MODE, sets the pointer in variable "text_file" and blanks that file.

read()
This function reads the contents of the file into a string variable.

USAGE:
textFromFile = text_file.read()
#This reads the file at pointer "text_file" into the string variable "textFromFile"

write()
This function writes a string into an external file.

USAGE:
text_file.write(MyString)
#This writes the contents of the string variable "MyString" into the file indexed at "text_file"

close()
This function closes access to the file.

USAGE:
text_file.close()

#This closes the file indexed at "text_file"

Get in Touch With Us!

* Subscribe and get Coding 101 automatically at TWiT.tv!
* Follow PadreSJ and Snubs on Twitter.
* Watch the show live and join the chatroom every Thursday at 1:30pm PST.
* Email us at Padre@twit.tv and Shannon@twit.tv.
* Join our Google+ Community!

Download or subscribe to this show at twit.tv/code. Also, check out our transcripts.

Bandwidth for Coding 101 is provided by Cachefly.

Running time: 49:50