Data Structures and Conditional Statements in Python

IN

Used to CHECK if a value is WITHIN another value.

LISTS

Data structure used for storing all data TYPES; int, float, string, etc. Created using [] square brackets.

APPEND

Adds value to the end of the list.

INSERT

Insert value at a location.

POP

Remove and return the value at the location.

LEN

Returns the TOTAL number of items within a string or list, short for length.

LIST

Converts item to a list.

TUPLES

Just like lists but UNADJUSTABLE.

DICTIONARIES

A hash table, map used for binding keys to values.

KEY

dictionary[key] - GET and SET the value.

DEL

del dict[key] - DELETE a value/key pair.

PYTHON DICTIONARY

Built-in data types in python, mapping object 'maps' value of one object with another.

Union of two dictionary objects

Returning new object.

CONDITIONAL STATEMENTS

Responsible in checking whether the given condition is true/false.

Basic Conditional Statement

if statement.

PYTHON CONDITIONS

Python supports the usual logical conditions from mathematics.

TAB

Python is supersensitive to spacing.

If Statement

Checks if a condition is true.

INDENTATION

Python relies on indentation (whitespace at the beginning of a line) to define scope in the code.

Elif Keyword

The elif keyword is Python's way of saying 'if the previous conditions were not true, then try this condition'.

Else Keyword

Is used when a condition is not satisfied.

Short-hand if-else

A one-liner conditional statement.

Ternary Operators

The use of multiple else statements on the same line.

Nested If Statement

If statements inside if statements.

Nested Else Statement

If statements inside else statements.

Pass Statement

If statements cannot be empty, but if you for some reason have an if statement with no content, put in the pass statement to avoid getting an error.

LOGICAL OPERATORS

Operators that combine conditional statements.

And

The and keyword is a logical operator, and is used to combine conditional statements.

Or

The or keyword is a logical operator, and is used to combine conditional statements.

Not

The not keyword is a logical operator, and is used to reverse the result of the conditional statements.