Luca's Notes

Python Reference

Mar 21, 20252 min read

Variables

Integers

i = 1  
x = 2  
hello = 3  
one_more = 13  
  
print(i)  
print(x)  
print(hello)  
print(one_more)  
  
ix = i*x  
algebra = 3*i  
i = i + 1  
  
print(ix)  
print(algebra)  
print(i)

Strings

a_string = "hello"  
another_string = "good bye 13 * & ())"  
  
print(a_string)  
print(another_string)  
  
b_string = a_string + another_string  
  
print(b_string)

Floats

x_dist = 13.5  
y_dist = 11.1  
  
print(x_dist)  
print(y_dist)  
  
import math  
  
real_dist = math.sqrt(x_dist*x_dist + y_dist*y_dist)  
  
print(real_dist)

Booleans

t = True  
f = False  
  
print(t)  
print(f)  
  
ore = t or f  
  
print(ore)  
  
end = t and f  
  
print(end)  
  
net = not t  
  
print(net)

Control

Conditionals

Less Than & Greater Than & Equal To

i = 10  
x = 15.5  
  
print(i < x)  
  
print(i > x)  
  
print(i < i)  
  
print(i <= i)  
  
print(i == x)  
  
print(i == i)

Boolean AND

i = 10  
x = 15.5  
  
t = (i < x)  
f = (i > x)  
  
print(t)  
print(f)  
  
print(t and f)  
print(t and t)  
print(f and f)

Boolean OR

i = 10  
x = 15.5  
  
t = (i < x)  
f = (i > x)  
  
print(t)  
print(f)  
  
print(t or f)  
print(t or t)  
print(f or f)

If

i = 10  
x = 15.5  
  
if(i<13):  
	print("Yes, I is smol")  
  
if(i<10 or x>i):  
	print("Boolean logic can be used in if statements")

Loops

While

i = 0  
count = 7  
  
while(i < 7):  
	i = i + 1  
	print("This is the ", i, " Time I've run")

For

for c in "hello":  
	print(c)  
  
for c in range(0,5):  
	print(c)

Nesting Loops

for c in "hello I like Ice Cream":  
	print(c)  
	i = 0  
	while(i<3):   
		i = i + 1   
		print("This is the ", i, " Time I've run for the letter ", c)

Grouping Code

Functions

def my_function(a_argument, b_argument):  
	print(a_argument * b_argument)  
  
my_function(12.5, 15)  
my_function(9, 3)

Classes

class MyClass:  
	def __init__(self):  
		self.my_var = 1  
		print("New Object Created")  
	def hello_world(self):  
		print("hello world")  
		print(self.my_var)  
  
my_object = MyClass()  
my_object.hello_world()

Graph View