Change the URL to py4e.com, typoes

Author: csev

book3/01-intro.mkd

@@ -255,7 +255,7 @@ language skills.
 Before you can converse with Python, you must first install the Python
 software on your computer and learn how to start Python on your
 computer. That is too much detail for this chapter so I suggest that you
-consult [www.pythonlearn.com](http://www.pythonlearn.com) where I have detailed
+consult [www.py4e.com](http://www.py4e.com) where I have detailed
 instructions and screencasts of setting up and starting Python on
 Macintosh and Windows systems. At some point, you will be in a terminal
 or command window and you will type *python* and the
@@ -577,7 +577,7 @@ Python techniques that were used to make the program. You are the end
 user, you simply use the program and marvel at its cleverness and how it
 saved you so much manual effort. You simply type the code into a file
 called *words.py* and run it or you download the source
-code from <http://www.pythonlearn.com/code3/> and run it.
+code from <http://www.py4e.com/code3/> and run it.
 
 \index{program}
 

book3/03-conditional.mkd

@@ -147,7 +147,7 @@ statements* because they stretch across more than one line.
 
 There is no limit on the number of statements that can appear in the
 body, but there must be at least one. Occasionally, it is useful to have
-a body with no statements (usually as a placekeeper for code you haven't
+a body with no statements (usually as a place holder for code you haven't
 written yet). In that case, you can use the `pass` statement,
 which does nothing.
 

book3/07-files.mkd

@@ -49,7 +49,7 @@ stored. When you open a file, you are asking the operating system to
 find the file by name and make sure the file exists. In this example, we
 open the file `mbox.txt`, which should be stored in the same
 folder that you are in when you start Python. You can download this file
-from [www.pythonlearn.com/code3/mbox.txt](http://www.pythonlearn.com/code3/mbox.txt)
+from [www.py4e.com/code3/mbox.txt](http://www.py4e.com/code3/mbox.txt)
 
     >>> fhand = open('mbox.txt')
     >>> print(fhand)
@@ -96,11 +96,11 @@ individuals in an open source project development team:
 
 The entire file of mail interactions is available from
 
-[www.pythonlearn.com/code3/mbox.txt](http://www.pythonlearn.com/code3/mbox.txt)
+[www.py4e.com/code3/mbox.txt](http://www.py4e.com/code3/mbox.txt)
 
 and a shortened version of the file is available from
 
-[www.pythonlearn.com/code3/mbox-short.txt](http://www.pythonlearn.com/code3/mbox-short.txt)
+[www.py4e.com/code3/mbox-short.txt](http://www.py4e.com/code3/mbox-short.txt)
 
 These files are in a standard format for a file containing multiple mail
 messages. The lines which start with "From " separate the messages and
@@ -568,7 +568,7 @@ program will look as follows:
 
 You can download the file from
 
-[www.pythonlearn.com/code3/mbox-short.txt](http://www.pythonlearn.com/code3/mbox-short.txt)
+[www.py4e.com/code3/mbox-short.txt](http://www.py4e.com/code3/mbox-short.txt)
 
 Exercise 2: Write a program to prompt for a file name, and then read
 through the file and look for lines of the form:

book3/08-lists.mkd

@@ -1073,7 +1073,7 @@ Exercises
 ---------
 
 Exercise 4: Download a copy of the file from
-[www.pythonlearn.com/code3/romeo.txt](http://www.pythonlearn.com/code3/romeo.txt)
+[www.py4e.com/code3/romeo.txt](http://www.py4e.com/code3/romeo.txt)
 
 \index{Romeo and Juliet}
 

book3/09-dictionaries.mkd

@@ -304,7 +304,7 @@ word on every line of the input file.
 
 When we run the program, we see a raw dump of all of the counts in
 unsorted hash order. (the `romeo.txt` file is available at
-[www.pythonlearn.com/code3/romeo.txt](http://www.pythonlearn.com/code3/romeo.txt))
+[www.py4e.com/code3/romeo.txt](http://www.py4e.com/code3/romeo.txt))
 
 ~~~~
 python count1.py

book3/12-network.mkd

@@ -46,7 +46,7 @@ This is a long and complex 176-page document with a lot of detail. If
 you find it interesting, feel free to read it all. But if you take a
 look around page 36 of RFC2616 you will find the syntax for the GET
 request. To request a document from a web server, we make a connection
-to the `www.pythonlearn.com` server on port 80, and then send a
+to the `www.pr4e.org` server on port 80, and then send a
 line of the form
 
 `GET http://data.pr4e.org/romeo.txt HTTP/1.0 `
@@ -67,7 +67,7 @@ display what the server sends back.
 \VerbatimInput{../code3/socket1.py} 
 
 First the program makes a connection to port 80 on the server
-[www.pythonlearn.com](http://www.pythonlearn.com). Since our program is playing the role
+[www.py4e.com](http://www.py4e.com). Since our program is playing the role
 of the "web browser", the HTTP protocol says we must send the GET
 command followed by a blank line.
 
@@ -338,12 +338,12 @@ http://www.dr-chuck.com/page2.htm
 
 ~~~~
 python urlregex.py
-Enter - http://www.pythonlearn.com/book.htm
+Enter - http://www.py4e.com/book.htm
 http://www.greenteapress.com/thinkpython/thinkpython.html
 http://allendowney.com/
-http://www.pythonlearn.com/code
+http://www.py4e.com/code
 http://www.lib.umich.edu/espresso-book-machine
-http://www.pythonlearn.com/py4inf-slides.zip
+http://www.py4e.com/py4inf-slides.zip
 ~~~~
 
 Regular expressions work very nicely when your HTML is well formatted
@@ -404,13 +404,13 @@ http://www.dr-chuck.com/page2.htm
 
 ~~~~
 python urllinks.py
-Enter - http://www.pythonlearn.com/book.htm
+Enter - http://www.py4e.com/book.htm
 http://www.greenteapress.com/thinkpython/thinkpython.html
 http://allendowney.com/
 http://www.si502.com/
 http://www.lib.umich.edu/espresso-book-machine
-http://www.pythonlearn.com/code
-http://www.pythonlearn.com/
+http://www.py4e.com/code
+http://www.py4e.com/
 ~~~~
 
 You can use BeautifulSoup to pull out various parts of each tag as
@@ -481,12 +481,12 @@ follows:
 \index{curl}
 
 ~~~~
-curl -O http://www.pythonlearn.com/cover.jpg
+curl -O http://www.py4e.com/cover.jpg
 ~~~~
 
 The command `curl` is short for "copy URL" and so these two
 examples are cleverly named `curl1.py` and
-`curl2.py` on [www.pythonlearn.com/code](http://www.pythonlearn.com/code) as
+`curl2.py` on [www.py4e.com/code3](http://www.py4e.com/code3) as
 they implement similar functionality to the `curl` command.
 There is also a `curl3.py` sample program that does this task
 a little more effectively, in case you actually want to use this pattern

book3/13-web.mkd

@@ -336,7 +336,7 @@ Enter location:
 ~~~~
 
 You can download
-[www.pythonlearn.com/code3/geoxml.py](http://www.pythonlearn.com/code3/geoxml.py) to
+[www.py4e.com/code3/geoxml.py](http://www.py4e.com/code3/geoxml.py) to
 explore the XML variant of the Google geocoding API.
 
 Security and API usage
@@ -374,7 +374,7 @@ libraries.
 For this next sample program we will download the files
 *twurl.py*, *hidden.py*,
 *oauth.py*, and *twitter1.py* from
-[www.pythonlearn.com/code](http://www.pythonlearn.com/code) and put them all in a folder
+[www.py4e.com/code](http://www.py4e.com/code3) and put them all in a folder
 on your computer.
 
 To make use of these programs you will need to have a Twitter account,
@@ -570,8 +570,8 @@ Exercises
 ---------
 
 **Exercise 1:** Change either the
-[www.pythonlearn.com/code3/geojson.py](http://www.pythonlearn.com/code3/geojson.py) or
-[www.pythonlearn.com/code3/geoxml.py](http://www.pythonlearn.com/code3/geoxml.py) to print
+[www.py4e.com/code3/geojson.py](http://www.py4e.com/code3/geojson.py) or
+[www.py4e.com/code3/geoxml.py](http://www.py4e.com/code3/geoxml.py) to print
 out the two-character country code from the retrieved data. Add error
 checking so your program does not traceback if the country code is not
 there. Once you have it working, search for "Atlantic Ocean" and make

book3/14-objects.mkd

@@ -89,10 +89,10 @@ and passing in the list (`stuff`) and the item we want retrieved from the list
 as parameters.
 
 The last three lines of the program are completely equivalent, but it is more
-convienent to simply use the square bracket syntax to look up an item at
+convenient to simply use the square bracket syntax to look up an item at
 a particular position in a list.
 
-We can take a look into the capbilities of an object by
+We can take a look into the capabilities of an object by
 looking at the output of the `dir()` function:
 
     >>> stuff = list()
@@ -196,7 +196,7 @@ read or what we plan to do with the data we extract from the web page.
 
 Another word we use to capture this idea that we ignore the internal
 detail of objects we use is "encapsulation".  This means that we can
-know how to use an object without knowing how it internally acomplishes
+know how to use an object without knowing how it internally accomplishes
 what we need done.
 
 Our First Python Object
@@ -221,7 +221,7 @@ and methods (code).
 \VerbatimInput{../code3/party2.py}
 
 Each method looks like a function, starting with the `def` keyword and
-consisting of an indended block of code.  This example has one attribute (x)
+consisting of an indented block of code.  This example has one attribute (x)
 and one method (party).   The methods have a special first parameter that
 we name by convention `self`.
 
@@ -341,7 +341,7 @@ Object Lifecycle
 
 In the previous examples, we are defining a class (template) and using that class
 to create an instance of that class (object) and then using the instance.  When
-the program finishes, all the varaibles are discarded.  Usually we don't think
+the program finishes, all the variables are discarded.  Usually we don't think
 much about the creation and destruction of variables, but often as our objects
 become more complex, we need to take some action within the object to set things
 up as the object is being constructed and possibly clean things up as the object is
@@ -375,7 +375,7 @@ stop our variable from being destroyed, but we can do any necessary
 cleanup right before our object no longer exists.
 
 When developing objects, it is quite common to add a constructor to an object
-to set in intial values in the object, it is relatively rare to need to
+to set in initial values in the object, it is relatively rare to need to
 need a destructor for an object.
 
 Many Instances
@@ -515,7 +515,7 @@ attribute
 
 class
 :   A template that can be used to construct an object.  Defines
-    the attrbutes and methods that will make up the object.
+    the attributes and methods that will make up the object.
 \index{class}
 
 child class
@@ -538,7 +538,7 @@ destructor
 inheritance
 :   When we create a new class (child) by extending an
     existing class (parent).  The child class has all the attributes
-    and methods of the parent class plus additional asttributes and
+    and methods of the parent class plus additional attributes and
     methods defined by the child class.
 \index{inheritance}
 
@@ -553,13 +553,13 @@ object
 :   A constructed instance of a class.  An object contains all of
     the attributes and methods that were defined by the class.
     Some object-oriented documentation uses the term 'instance'
-    interchangably with 'object'.
+    interchangeably with 'object'.
 \index{method}
 
 parent class
-:   The class which is being extended to create a new chld class.
+:   The class which is being extended to create a new child class.
     The parent class contributes all of its methods and attributes
-    to the new chaild class.
+    to the new child class.
 \index{parent class}
 
 

book3/15-database.mkd

@@ -915,7 +915,7 @@ Take the rows from `Follows` and append the row from
 `People` where the field `from_id` in `Follows` is
 the same the `id` value in the `People` table.
 
-![Conencting Tables Using JOIN](height=3.5in@figs2/join)
+![Connecting Tables Using JOIN](height=3.5in@figs2/join)
 
 The result of the JOIN is to create extra-long "metarows" which have
 both the fields from `People` and the matching fields from

book3/16-viz.mkd

@@ -26,7 +26,7 @@ the data on a Google map.
 
 To get started, download the application from:
 
-[www.pythonlearn.com/code3/geodata.zip](http://www.pythonlearn.com/code3/geodata.zip)
+[www.py4e.com/code3/geodata.zip](http://www.py4e.com/code3/geodata.zip)
 
 The first problem to solve is that the free Google geocoding API is
 rate-limited to a certain number of requests per day. If you have a lot
@@ -150,7 +150,7 @@ visualization output.
 
 You can download and extract this application from:
 
-[www.pythonlearn.com/code3/pagerank.zip](http://www.pythonlearn.com/code3/pagerank.zip)
+[www.py4e.com/code3/pagerank.zip](http://www.py4e.com/code3/pagerank.zip)
 
 ![A Page Ranking](height=3.5in@../images/pagerank)
 
@@ -304,7 +304,7 @@ far and pull down nearly a gigabyte of data and visualize it.
 
 You can download this application from:
 
-[www.pythonlearn.com/code3/gmane.zip](http://www.pythonlearn.com/code3/gmane.zip)
+[www.py4e.com/code3/gmane.zip](http://www.py4e.com/code3/gmane.zip)
 
 We will be using data from a free email list archiving service called
 [www.gmane.org](http://www.gmane.org). This service is very popular with open

book3/createspace/2016-08-31-x.mobi

@@ -75,7 +75,7 @@
         if fn.startswith('../') :
             # Add a blank unless there is one at end of file
             if blank : print 
-            fu = fn.replace('../','http://www.pythonlearn.com/')
+            fu = fn.replace('../','http://www.py4e.com/')
             print '# Code:', fu
             if trinket:
                 print "# Or select Download from this trinket's left-hand menu"
@@ -102,4 +102,4 @@
         with open(tmpfile, 'r') as f:
             print f.read()
 
-    os.remove(tmpfile)
+    os.remove(tmpfile)

book3/createspace/2016-08-31-x.pdf

@@ -46,7 +46,7 @@
 <p><b>About this Map</b></p>
 <p>
 This is a cool map from 
-<a href="http://www.pythonlearn.com">www.pythonlearn.com</a>.
+<a href="http://www.py4e.com">www.py4e.com</a>.
 </p>
 </body>
 </html>

book3/verbatim.py

@@ -238,7 +238,7 @@ our new language skills.
 Before you can converse with Python, you must first install the Python
 software on your computer and learn how to start Python on your 
 computer.  That is too much detail for this chapter so I suggest
-that you consult www.pythonlearn.com where I have detailed
+that you consult www.py4e.com where I have detailed
 instructions and screencasts of setting up and starting Python 
 on Macintosh and Windows systems.  At some point, you will be in 
 a terminal or command window and you will type python and 
@@ -434,7 +434,7 @@ used to make the program.  You are the end user, you simply use the program and
 at its cleverness and how it saved you so much manual effort.
 You simply type the code 
 into a file called words.py and run it or you download the source 
-code from http://www.pythonlearn.com/code/ and run it.
+code from http://www.py4e.com/code/ and run it.
 
 This is a good example of how Python and the Python language are acting as an intermediary
 between you (the end user) and me (the programmer).  Python is a way for us to exchange useful

code3/geodata/where.html

@@ -2,7 +2,7 @@
 # https://pypi.python.org/pypi/beautifulsoup4
 
 # Or download the file
-# http://www.pythonlearn.com/code3/bs4.zip
+# http://www.py4e.com/code3/bs4.zip
 # and unzip it in the same directory as this file
 
 from urllib.request import urlopen

code3/intro.txt

@@ -2,7 +2,7 @@
 # https://pypi.python.org/pypi/beautifulsoup4
 
 # Or download the file
-# http://www.pythonlearn.com/code3/bs4.zip
+# http://www.py4e.com/code3/bs4.zip
 # and unzip it in the same directory as this file
 
 import urllib.request, urllib.parse, urllib.error

code3/urllink2.py

@@ -2,7 +2,7 @@
 # https://pypi.python.org/pypi/beautifulsoup4
 
 # Or download the file
-# http://www.pythonlearn.com/code3/bs4.zip
+# http://www.py4e.com/code3/bs4.zip
 # and unzip it in the same directory as this file
 
 import urllib.request, urllib.parse, urllib.error

code3/urllink3.py

@@ -1,5 +1,5 @@
 # Note - this code must run in Python 2.x and you must download
-# http://www.pythonlearn.com/code/BeautifulSoup.py
+# http://www.py4e.com/code/BeautifulSoup.py
 # Into the same folder as this program
 
 import string

code3/urllinks.py

@@ -102,7 +102,7 @@
   "title":"Peer Review: Installing and Running Python Screen Shots",
   "description":"Install Python and a programming text editor and write a program that prints one line other than 'hello world', then take two screen shots and upload them below. You should use the command line to execute the Python program you wrote in the text editor. Please do *not* use the IDLE Python Shell, the Python Interpreter (>>>), or a shortcut in your text editor to run the code. Later in the class when we start reading files, we will need to be able to run Python programs from particular directories. See the videos for details.",
   "grading":"This is a relatively simple assignment. The goal is to simply show that each student has Python installed on their desktop or laptop and can take screen shots. Please make your comments to help the student that you are reviewing.",
-  "assignment":"http://www.pythonlearn.com/install",
+  "assignment":"http://www.py4e.com/install",
   "parts":[
     {
       "title":"Image of the program being edited in a text editor",