--- a/parsing_data.rst	Thu Sep 23 12:46:52 2010 +0530
+++ b/parsing_data.rst	Thu Sep 23 12:51:32 2010 +0530
@@ -1,3 +1,8 @@
+.. Author              : Nishanth
+   Internal Reviewer 1 : 
+   Internal Reviewer 2 : 
+   External Reviewer   :
+
 Hello friends and welcome to the tutorial on Parsing Data
 
 {{{ Show the slide containing title }}}
@@ -6,15 +11,20 @@
 
 In this tutorial, we shall learn
 
- * What is parsing data
+ * What we mean by parsing data
  * the string operations required for parsing data
  * datatype conversion
 
+#[Puneeth]: Changed a few things, here.  
+
+#[Puneeth]: I don't like the way the term "parsing data" has been used, all
+through the script. See if that can be changed.
+
  Lets us have a look at the problem
 
 {{{ Show the slide containing problem statement. }}}
 
-There is an input file containing huge no.of records. Each record corresponds
+There is an input file containing huge no. of records. Each record corresponds
 to a student.
 
 {{{ show the slide explaining record structure }}}
@@ -28,16 +38,22 @@
 #[Nishanth]: Please note that I am not telling anything about AA since they do
              not know about any if/else yet.
 
+#[Puneeth]: Should we talk pass/fail etc? I think we should make the problem
+ simple and leave out all the columns after total marks. 
 
-So what exactly is parsing data?
+Now what is parsing data.
 
+From the input file, we can see that the data we have is in the form of
+text. Parsing this data is all about reading it and converting it into a form
+which can be used for computations -- in our case, sequence of numbers.
 
-Parsing data is all about reading the data and converting it into a form which
-can be used for computations. In our case, that is numbers.
+#[Puneeth]: should the word tokenizing, be used? Should it be defined before
+ using it?
 
 We can clearly see that the problem involves reading files and tokenizing.
 
-.. #[[Amit:Definition of Tokenizing here.]]
+#[Puneeth]: the sentence above seems kinda redundant. 
+
 Let us learn about tokenizing strings. Let us define a string first. Type
 ::
 
@@ -48,11 +64,11 @@
 
     line.split()
 
-As you can see, we get a list of strings. Which means, when split is called
+As you can see, we get a list of strings. Which means, when ``split`` is called
 without any arguments, it splits on whitespace. In simple words, all the spaces
 are treated as one big space.
 
-split also can split on a string of our choice. This is acheived by passing
+``split`` also can split on a string of our choice. This is acheived by passing
 that as an argument. But first lets define a sample record from the file.
 ::
 
@@ -63,8 +79,8 @@
 We can also observe that an empty string appears in the list since there are
 two semi colons without anything in between.
 
-Hence split splits on whitespace if called without an argument and splits on
-the given argument if it is called with an argument.
+To recap, ``split`` splits on whitespace if called without an argument and
+splits on the given argument if it is called with an argument.
 
 {{{ Pause here and try out the following exercises }}}
 
@@ -76,13 +92,13 @@
 We see that when we split on space, multiple whitespaces are not clubbed as one
 and there is an empty string everytime there are two consecutive spaces.
 
-Now that we know how to split a string, we can split the record and retreive each
-field seperately. But there is one problem. The region code "B" and a "B"
+Now that we know how to split a string, we can split the record and retrieve
+each field seperately. But there is one problem. The region code "B" and a "B"
 surrounded by whitespace are treated as two different regions. We must find a
 way to remove all the whitespace around a string so that "B" and a "B" with
 white spaces are dealt as same.
 
-This is possible by using the =strip= method of strings. Let us define a
+This is possible by using the ``strip`` method of strings. Let us define a
 string by typing
 ::
 
@@ -110,20 +126,21 @@
 white space. The only road block we now have is conversion of string to float.
 
 The splitting and stripping operations are done on a string and their result is
-also a string, hence the marks that we have are still strings and mathematical
-operations on them are not possible. We must convert them into integers or floats
+also a string. hence the marks that we have are still strings and mathematical
+operations are not possible on them. We must convert them into numbers
+(integers or floats), before we can perform mathematical operations on them. 
 
-We shall look at converting strings into floats. We define an float string
-first. Type
+We shall look at converting strings into floats. We define a float string
+first. Type 
 ::
 
     mark_str = "1.25"
-    mark = float(mark_str)
+    mark = int(mark_str)
     type(mark_str)
     type(mark)
 
 We can see that string is converted to float. We can perform mathematical
-operations on it now.
+operations on them now.
 
 {{{ Pause here and try out the following exercises }}}
 
@@ -131,8 +148,6 @@
 
 {{{ continue from paused state }}}
 
-.. #[[Amit:I think there should be some interaction first here about the
-problem before we conclude to talking about the result.]]
 It raises an error since converting a float string into integer directly is
 not possible. It involves an intermediate step of converting to float.
 ::
@@ -143,7 +158,7 @@
     number = int(flt)
     number
 
-Using =int= it is possible to convert float into integers.
+Using ``int`` it is also possible to convert float into integers.
 
 Now that we have all the machinery required to parse the file, let us solve the
 problem. We first read the file line by line and parse each record. We see if
@@ -162,7 +177,7 @@
 
         if region_code == "AA":
             math_marks_B.append(math_mark)
-.. #[[Amit:This intutively does not seem to be what you wanted]]
+
 
 Now we have all the maths marks of region "B" in the list math_marks_B.
 To get the mean, we just have to sum the marks and divide by the length.
@@ -179,7 +194,6 @@
  * how to tokenize a string using various delimiters
  * how to get rid of extra white space around
  * how to convert from one type to another
-.. #[[Amit:one datatype to another may be better.]]
  * how to parse input data and perform computations on it
 
 {{{ Show the "sponsored by FOSSEE" slide }}}
@@ -188,9 +202,5 @@
 This tutorial was created as a part of FOSSEE project, NME ICT, MHRD India
 
 Hope you have enjoyed and found it useful.
-Thankyou
+Thank you
  
-.. Author              : Nishanth
-   Internal Reviewer 1 : Amit Sethi 
-   Internal Reviewer 2 : 
-   External Reviewer   :