Step 1 - Getting Started in Python 3

Question 1

What do you mean by Six Degree of Separation ?

Answer 1

Six degrees of separation is the theory that any person on the planet can be connected to any other person on the planet through a chain of acquaintances that has no more than five intermediaries.

Question 2

What is Zen of Python ?

Answer 2

The Zen of Python by Tim Peters are 20 guidelines for the design of the Python language. Your Python code doesn’t necessarily have to follow these guidelines, but they’re good to keep in mind. The Zen of Python is an Easter egg, or hidden joke, that appears if you run import this:

> > > import this

Question 3

When was Python Born ?

Answer 3

Python was officially born in Feb 20 1991,with version no. 0.9 .

Question 4

What are some Development Environments of Python?

Answer 4

Python IDEs are,
Jupyter Notebook,Jupyter Lab
PC or Pycharm
VS Code Editor

Question 5

Which Python Modules are for Data Manipulation ?

Answer 5

Numpy & Pandas

Question 6

Which Python Modules are for Scientific Computing ?

Answer 6

SciPy Module

Question 7

In which module ML algorithms are efficiently implemented.

Answer 7

SciKit Learn or sklearn

Question 8

Which Python Modules are for Big Data ?

Answer 8

Hadoopy & PySpark

Question 9

Which Python Modules are to Speed up

or Boosting Python Code as par C Code ?

Answer 9

Cython & Numba helps python code run faster.

Question 10

What is a popular test automation framework in Python ?

Answer 10

NOSE

Question 11

When was Pythion 3.0 released?

Answer 11

In Dec 2008

Question 12

When was Python 2.x End of Life

Answer 12

It originally had a scheduled EOL for 2015 but was extended for another five years to 2020

Question 13

What is BSD License ?

Answer 13

The abbreviation of BSD is Berkely Source Distribution, It is a low restriction-based license for opensource S/W.Which gives you permission to use it commercially and for redistribution

Question 14

What are Python Identifiers ?

Answer 14

Identifiers are the names of objects,
such as varaibles names,class names,function names

Question 15

What are the rules of creating identifiers in Python ?

Answer 15

1. It can be a combination of lower case or uppercase Letters,digits 0-9 & underscore.
2. It cant be starts with digit.
3. Special Symbol not allowed except underscore
4. Keywords not allowed as identifiers.

Question 16

What are python Keywords ?

Answer 16

These are set of reserved words,which are used to define syntax & structure of the language.
Keywords are case sensitive must be used in lower case

Question 17

What is indentation in python ?

Answer 17

Indentation is very important in python,it means you have to maintain proper space from left when writing a code.

Question 18

What are suites in python ?

Answer 18

Collection of individual Statements that makes a single code block.Header line begin with a keyword & terminate with a colon: and that are followed by a one or more lines that makes up a suite.

Question 19

What are basic Object types in python?

Answer 19

All data in the python program is represented by objects or by relations between objects,objects are data types in python ,
Objects has three things - identity.type & value

Question 20

List some Basic Object types in python ?

Answer 20

These are Total Twelve

1. None
2. Boolean
3. Integer
4. Float
5. Long
6. Complex
7. String
8. List
9. Tuple
10. Set
11. Dictionary
12. File

Question 21

How to write comments in Python ?

Answer 21

Single Line Comments Starts with #

Multiline comments are within Tripple Quotes “”” “”””

Question 22

How to write multiline statements in python

Answer 22

Multiline statements can be written in two ways -
Implicit Continuation - Put the code in brackets and brake the line after binary operator .
x = (1 + 1+ 2 +
3 + 5)
weekdays = [‘Monday’,’Tuesday’,
‘Wednesday’,’Thursday’]
print(weekdays)

Explicit Continuation - Use backslash.
x = 1 + 1+ 2 +\
3 + 5

Question 23

How to write multiple statements in a single line in Python?

Answer 23

Use semicolon at the end statement .

Question 24

What is the difference between Expression and Statement in python?

Answer 24

Expression: Something which evaluates to a value. Example: 1+2/x
an expression is any section of the code that evaluates to a value

Statement: A line of code which does something. Example: GOTO 100.A statement is a complete line of code that performs some action

Question 25

How many operators are in Python ?

Answer 25

They are total 7even- ``` 1.Arithmetic Operators +, - , *, /, % , // , ** 2. Assighnement Operators 3. Logical Operators and , or , not 4.Relational or Comparison Operators ==, != , < , > , >= , <= 5.Membership Operators in , not in 6. Identity Operators is , is not 7. Bitwise Operators ```

Question 26

How to use for loop in Python ?

Answer 26

list1 = [11,2,3,4,5] | for item in list1:

Question 26

How to use for loop in Python ?

Answer 26

list1 = [11,2,3,4,5] for item in list1: print(item) for loop is executed till the item gets value from list 1

Question 27

How to use the while loop ?

Answer 27

count =0 while count < 5: print(Count) count = count + 1

Question 28

How to use if else ?

Answer 28

``` var = 10 if var == 15: print(var) elif var > 10: print(var) else: print(var) ```

Question 29

What is CRUD ?

Answer 29

Abbreviation of CRUD is Create,Read,Update,Delete.

Question 30

How to update a list ?

Answer 30

We have Two Methods - Direct Update - list1[3] = 10 ``` or by using inbuilt functions - append,extend,insert list1.append(value) list1.extend(1,2,3,4) list1,insert(index,value) ```

Question 30

How to Create a list ?

Answer 30

We have Two Methods - Direct Update - list1[3] = 10 ``` or by using inbuilt functions - append,extend,insert list1.append(value) list1.extend(1,2,3,4) list1,insert(index,value) ```

Question 31

How many Arithmatic operators in Python ?

Answer 31

``` Total are 7even Arithmatic operators Addition + Subtraction - Multiplication * Division / Modulus % Floor Division // Exponent ** ```

Question 32

How many Logical Operators ?

Answer 32

Total are Three Logical operators and or not

Question 33

What term is called guidelines for the design of python language ?

Answer 33

The Term is called Zen of Python

Question 34

What was the first version of Python language ?

Answer 34

The first version of python is 0.9 released in Feb 20, 1991

Question 35

What are the three most important things associated with objects/variables in Python ?

Answer 35

These are Identity,Type & Value

Question 36

What are docstrings in python ?

Answer 36

Multiline Comments enclosed within Tripple quotes are called Docstrings .

Question 37

Who is Tim Peters ?

Answer 37

Tim Peters is an American software developer who wrote the set of principles " The Zen Of Pythons " and posted it on the Python mailing list in 1999. The Zen of Python is a collection of 19 "guiding principles" for writing computer programs that influence the design of the Python programming language.

Answer 38

What is ternary operator in Python,and how to use it