Schedule

Schedule

Wednesday, September 3

1409758200 FLOSS Weekly
1409763600 Tech News Today
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1409774400 This Week in Google
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Thursday, September 4

1409850000 Tech News Today
1409853600 Know How...
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1409862600 Coding 101
1409866200 Home Theater Geeks
1409871600 Tech News 2Night
1409873400 The Giz Wiz
1409882400 OMGcraft

Friday, September 5

1409936400 Tech News Today
1409940000 This Week in Law
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Saturday, September 6

1410026400 The Tech Guy

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Monday, September 8

1410195600 Tech News Today
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1410219000 Marketing Mavericks

Tuesday, September 9

1410282000 Tech News Today
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1410307200 All About Android
1410316200 Padre's Corner

Wednesday, September 10

1410363000 FLOSS Weekly
1410368400 Tech News Today
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1410379200 This Week in Google
1410390000 Tech News 2Night
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Thursday, September 11

1410454800 Tech News Today
1410458400 Know How...
1410462000 The Social Hour
1410467400 Coding 101
1410471000 Home Theater Geeks
1410476400 Tech News 2Night
1410478200 The Giz Wiz
1410487200 OMGcraft

Friday, September 12

1410541200 Tech News Today
1410544800 This Week in Law
1410552000 Android App Arena
1410562800 Tech News 2Night

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Before You Buy

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All About Android
Episode #177: Hardware is Hard September 2nd, 2014

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Security Now

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Tech News 2Night
Episode #163: Secure Your Cloud September 2nd, 2014

Home Depot credit card breach.

MacBreak Weekly

Preview of the iPhone 6 event.

OMGcraft

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This Week in Tech

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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.

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Running time: 49:50