Python

Indentation

Python is an indented language, so the code indentation matters. A good practice is to indent with 4 spaces (if you mix spaces and tabs the code won't work.

Operators

Arithmetic

+    Addition
-    Substraction
*    Multiplication
/    Division
**   Power
%    Reminder
//   Floor division (Reminder is removed)

Comparison

==   Equal 
!=   Not equal
>    Greater
>=   Greater or equal
<    Smaller
<=   Smaller or equal
<>   Similar to !=

Assignment

=    Simple assignment
+=   Add and as
-=   Substract and  assignment
*=   Multiply and assignment
/=   Divide and assignment
%=   Modulus and assignment
**=  Exponent and assignment
//=  Floor Divisionn and assignment

Bitwise operators

They perform operations on binary terms. a= 8 → 100; b= 9 → 101; a & b → 100

$    Binary AND
|    Binary OR
^    Binary XOR
~    Binary complement
<<   Binary left shift
>>   Binary right shift

Logic

and
or
not

Membership operators

in
not in

Variables

String

Strings can be subset,

MyString = "Hello world"
MyString[0:4]

Hel

Dictionary

Key - Value pairs,