Learning Day-04

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Let's Learn Python

# Day-04

Built-in Data types:

python supports dynamic data typing.

In Programming, data type is an Important Concept.

Variables can Store of different types, and different types can do different things.

-> based on assigned values,automatically data type will be constructed

to a variable. 

a=10

#a is int

b=20.45

#b is float

c="hello"

#c is string

two types . 

1. simple types. 

2. complex types (collection types)

1. simple:

------------------------

int

float

string --> str

boolean -->bool

name--> string

age --> int

income   --> float

areYouMarried --> bool

----------------------

name = "Sreeram"

or

name = 'Sreeram'

-------------------------------

name = "xyz"

<var> = input(<prompting text>)

name = input("Name please ")

#string

age = int(input("Age "))

income =  float( input("Enter monthly text "))

------------------------------------------

  

inc = int(float(input("Enter monthly income ")))

250.75# typed value

-------------------------------------

a=10

b=20.5

c = a + b

type(c)

#float

-------------------------

qualified = True

x = False

----------------------------------

s = "computer"

s[0]-->c

s[3]-->p

len(s) #8

s[len(s)-1] --> s[7] --> r

s[-1] --> from last first one. ---> r

s[-3] --> from last third one. --> t

slicing:

--------

s[startIndex : endIndex]

--> start Index includes. 

--> end INdex excludes.. 

s = "computer"

s[0:4]--> 0,1,2,3 --> comp

s[3:7]--> 3,4,5,6

s[1:-1]

More on Strings and String Handling we will see in upcoming classes. 

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