Indents, pip, virtualenv, datatypes, data structures, data containers

1. The Awesome
Indents, pip, virtualenv, basic data
types and data structures.
Part-2

2. Summary of Part-1
In the first part we have installed python. Setup editor and checked with pip.
This part we will get to know how to write a basic python code. Dig into pip and
virtualenv, and learn about data types and data structures.
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3. Set up environment to start
PIP
Its Python Installer Package.
Python is so well designed and managed
that you don't have to do anything
manually, just type pip install package
name and bang.
Its can handle multiple python version and
multiple pip version on a single machine.
Virtual Environment
It's creates the necessary development
environments on the same systems so
that user can use multiple software
version in one machine.
For this tutorial we will not use any
environment as its simple python
learning.
In the next play list of web development we
will go for it.
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4. Python Code
There are certain things that can make you feel like a king while writing code.
First of all add the following list of plugins to your sublime text and follow proper
coding styles. As we have discussed in the first part there is no braces in python
and hence code block is distinguished by indents. A good coding practice follow
4 space indent for one block.
It might confuse you at first if you are following conventional languages like c or
java but then you will feel more comfortable and readable code.
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5. Hello world
Done! Only a line that too way too readable. Isn’t it great.
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6. Enjoying?
Lets swap two variables
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7. Datatypes
Unlike any other languages you don’t need to define the variable type every time
before using it.
I mean suppose now variable x = 2 now type(x) is int, in the next line is x = 2.5
type(x) will be float, the very next line assign x = ‘India’ and its str now.
so it’s kind of generic where you don’t need to define like int x = 1, like you do in
C or java and that makes typecasting super easy in python. That’s the
awesomeness of python.
So basically we have the same data types in python int, float, str.
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8. Basic Data Structures
Here comes one of the most important
concepts of python,
MUTABLE & IMMUTABLE
Mutable means “liable to change” meaning you
can change the values but Immutable you can
not change the values.
There are 4 basic data structures available in
python.
● List
● Dictionary
● Tuple
● Set
- List is like and arrey.
- Dictionary is like hash table that has key value pair.
- Tuple is like list but immutable. 8

9. Lists
List behaved exactly like arrey, It’s a sequence, enclosed with [ ] and separated
by ‘ , ‘ .
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10. Tuple
Tuple is same as list, But it is immutable. You can not alter the value of a tuple
with your code. It is enclosed by ( ).
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11. Dictionary
Dictionary is enclosed by {} and have key value pair. It is the most important
data structures of python. It’s handled as a hash table in backend.
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12. Set
Set acts as mathematical set to represent data.
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13. ThanksStay Tuned for the next part. Enjoy !!
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