Python:Basic Notes

Python:Basic Notes

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Size of a empty list is 72.

import sys

a =[]

Sys.getsizeof(a)

Format method is very important.

Input —is liking talking a python expression so type cast It.

in python function also I object oriented.

Write 10 functions in python its a object oriented code . 

For code to be object oriented in python we don’t need to write a class.

Duct typing in python.

a=10

dir(a)—— very important 

Emulating number types can be found in docs.python.

Finding type of a object

type(a)

— will give string ,list ,class and so on ..

Anything that has a. Label Is a object in python.

Variables are labels to objects.(just references)

Python is a complied interpreted language .

Compliers job is to check to syntax and indentation.

map function. ——works for a collection ..

To check path.

>>> import sys

>>> sys.path

For comparison two things sets are best !

All collections can get length and we can iterate over them .

Set is not indexable — remember …. Can perform .. remove.

Set to use only when you are performing comparison if tow comparison …

Request module is used for rest api.

Import request

Response  =response.get(“http://www.google.com/“)

Response 

Response.status.code

dir(response)

NOTE: — response module looks like  dictionary  implementation but not its  cases sensitive — dictionaries are case sensitive …

EVERY IDENTIFIES ARE KEYS IN A DICTONARIES IN PYTHON …

In python mostly dictionary is used ..

Zip function to combine two dictionaries