st-scripts: comparison basic-data-type/script.rst

equal deleted inserted replaced

-:9858ca9e3f93
+:a534e9e79599
 {{{ Show the slide containing the outline slide }}}
 In this tutorial, we shall look at
 * Datatypes in Python
 * Numbers
 * Boolean
 * Sequence
 * Operators in Python
 * Arithmetic Operators
 * Boolean Operators
-* Manipulating Sequence datatypes
+* Python Sequence Data types
+* list
+* string
+* tuple
 .. #[Puneeth: Use double colon only for code blocks.]
 .. #[Puneeth: include more details in the outline.]
 with a little hands-on on how they can be applied to the different data types.
 First we will explore python data structures in the domain of numbers.
 There are three built-in data types in python to represent numbers.
-{{{ A slide to make a memory note of this }}}
+{{{ A slide to make a memory note of the different datatypes }}}
 These are:
 * int
 * float
 If we now see ::
 type(a)
 <type 'int'>
-This means that a is a type of int. Being an int data structure in python
+This means that a is a type of int. Being an int data type in python
 means that there are various functions that this variable has to manipulate
-it different ways. You can explore these by doing,
+in different ways. You can explore these by doing,
 a.<Tab>
 .. #[Puneeth: Why are we suddenly talking of limits?
 .. Something like this would be better.
 .. int data-type can hold integers of any size. for example - ]
-*int* datatype can hold integers of any size lets see this by example.
+*int* datatype can hold integers of any size lets see this by an example.
 b = 99999999999999999999
 b
 As you can see even when we put a value of 9 repeated 20 times python did
-not complain. However when you asked python to print the number again it
+not complain. This is because python's int data-type can hold integers of any
-put a capital L at the end. Now if you check the type of this variable b,
+size.
-::
-type(b)
-<type 'long'>
-The reason for this is that python recognizes large integer numbers by the
-data type long. However long type and int type share there functions
-and properties.
 .. #[Puneeth: again, the clean-up that I talked of above. Decide if you are
 .. talking about the different type of numbers and the datatypes that are
 .. used to represent them or if you are talking of the data-types and what
 .. kind of numbers they represent. I think you should choose the former.]
 We can get the absolute value using the function ::
 abs(c)
+Following is are exercises that you must do.
-{{ Slide for memory aid }}
+%% %% Find the absolute value of 3+4j
+::
+abs(3+4j)
+%% %% What is the datatype of number 999999999999999999? Is it
+not int?
+::
+Long
+Big integers are internally stored in python
+as Long datatype.
+Please, pause the video here. Do the exercises and then continue.
+{{ Slide for showing Boolean datatypes }}
 Python also has Boolean as a built-in type.
 Try it out just type ::
 45*76
 '/' for division ::
 384/16
+8/3
-'%' for modulo operation ::
+8.0/3
+When we did 8/3 the first case results in am integer
+output as both the operands are integer however when
+8.0/3 is used the answer is float as one of the operands is
+float.
+'%' for modulo operation ::
 87 % 6
 and two stars for a exponent. ::
 is same as ::
 a=a/23
+Following is an (are) exercise(s) that you must do.
+%% %% Using python find sqaure root of 3?
+::
+3**0.5
+%% %% Is 3**1/2 and 3**0.5 same
+::
+No,One gives an int answer and the other float
+Please, pause the video here. Do the exercises and then continue.
 Lets now discuss sequence data types in Python. Sequence data types
 are those in which elements are kept in a sequential order and all the
-elements accessed using index numbers.
+elements are accessed using index numbers.
 .. #[Puneeth: fix the last sentence - it sounds incomplete]
-{{{ slide for memory aid }}}
+{{{ slide introducing sequence datatype }}}
 The sequence datatypes in Python are ::
 * list
 * string
 greeting_string="hello"
 greeting_string is now a string variable with the value "hello"
-{{{ Memory Aid Slide }}}
+{{{ All the different types of strings shown }}}
 Python strings can actually be defined in three different ways ::
 k='Single quote'
 l="Let's see how to include a single quote"
 Find maximum using max function and minimum using min::
 max(num_tuple)
 min(greeting_string)
-Get a sorted list and reversed list using sorted and reversed function ::
+Get a sorted list  ::
 sorted(num_list)
-reversed(greeting_string)
-As a consequence of there order we can access a group of elements of sequence,
+As a consequence of there order we can access a group of elements
-together. This is called slicing and striding.
+in a sequence,together. This is called slicing and striding.
 .. #[Puneeth: Fix the sentence above. ]
-First Slicing
+First lets discuss Slicing,
 Given a list ::
 j=[1,2,3,4,5,6]
 ' '.join['Now','on','spaces']
 Note that the list has to be a list of strings to apply join operation.
 With this we come to the end of this tutorial .
+Following is an (are) exercise(s) that you must do.
+%% %% Check if 3 is an element of the list [1,7,5,3,4]. In case
+it is change it to 21.
+::
+l=[1,7,5,3,4]
+3 in l
+l[3]=21
+l
+%% %% Convert the string "Elizabeth is queen of england" to
+"Elizabeth is queen"
+::
+s="Elizabeth is queen of england"
+stemp=s.split()
+' '.join(stemp[:3])
+Please, pause the video here. Do the exercise(s) and then continue.
 In this tutorial we have discussed
 1. Number Datatypes , integer,float and complex
 2. Boolean and datatype and operators

changeset 406	a534e9e79599
parent 364	91d16630c90f
child 412	bb45826efe74