/Python_to_Som

Primary LanguageJupyter Notebook

Python concepts and syntax (Inner files)

This repository contains Python cenceptual notes with syntax & examples. Helpful for quick revision and to use as a cheetsheet.

Main Contents

1.Introduction to python

2. Variable declaration, identifiers and data types

3. Python opearators

4. Data Structures

5. Input outputs

6. Conditional and Control Statements

1. Introduction to python*

  • Characteristics and advantages of python
  • General programming paradigm

2. Variable declaration, identifiers and data types*

  • Variable declaration
  • How to declare variables and initialize variables(assign values)
  • Python Identifiers
  • Naming conventions for Python identifiers
  • Python Data types
  • Dealing with strings

Dealing with string data type

File showing syntax and examples.

  • Single string
  • Multiple string
  • String slicing
  • Modify strings: lower(), upper(), strip()
  • Split a string
  • Join strings
  • Check the presence of a character(s) in a string.

Other string methods

Find out what else we can do with strings

3. Python operators*

3.1 Arithmatic Operator

e.g:
% modulus operator, a%b gives the remainder of a/b
** power operator, a**3 means cube of a.
# or, 
pow(a,3) means cube of a

// floor division operator. (Gives division results in integer and ignores the remainder)

3.2 Assignment operator

x += 3 ---> means x = x+3

3.3 Comparision operator

e.g: == Equal
!= Not equal

3.4 Logical operator (and, or, not)

3.5 Identity operator

>> x is y       # this return True if x and y are exactly same object.
a= ['q',3,43]
b= ['q',3,43]
c = b
print(a is b)    # Returns False
print(c is b)    # Returns True

# Another identity operator is: x is not y

3.6 Membership operator

if x in list:
   print('True')
else: 
   print('False)

# Similarly another membership operator is: not in

3.7 Bitwise operator

Deals with binary bits.

AND - Binary AND operation

NOT - Binary NOT operation

More about python operators

4. Python data structures*

  • list, tuple, dict, set
  • Basic differences.
  • How to access elements from them.
  • In which situation, which one to use!

5. Taking input and printing output*

  • Taking multiplt inputs for different variables
  • Taking mutiple inputs for the same variable.
  • Optimized way to print multiple strings and variables together

6. Conditional and control statements*

  • Short hand if
  • Short hand if else
  • For loop and else
  • While loop and else
  • For loop vs While loop
  • Break vs Continue