> For the complete documentation index, see [llms.txt](https://wiki.zacheller.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://wiki.zacheller.dev/pentest/courses/beginner-network-pentesting/week-2/untitled-1.md).

# python101.py

```python
#!/bin/python3

#Print string
print("Strings and things:")
print('Hello, world!')
print("""Hello, this is
a multi-line string""")
print("This is" +" a string")

print('\n') #new line

#Maths
print("Math time:")
print(50+50) #add
print(50-50) #sub
print(50*50) #mult
print(50/50) #divide
print(50 +50 - 50 * 50 /50) #PEMDAS
print(50 ** 2) #exponents
print(50 % 6) #modulo
print(50 // 6) #number without remainder

print('\n') #new line

#Variables & Methods
print("Variables and Methods:")
quote = "All is fair in love and war"
print(len(quote)) #length
print(quote.upper()) #uppercase
print(quote.lower()) #lowercase
print(quote.title()) #title

name = "Heath"
age = 29 #int int(29) <-- declare as integer
gpa = 3.7 #float float(3.7)

print(int(age))
print(int(gpa)) #does not round

print("My name is: " + name + " and I am " + str(age)  + " years old.")

age += 1 #increment
print (age)
print('\n') #new line
#Functions
print("Functions:")
def who_am_i():
	name = "Heath"
	age = 29
	print("My name is: " + name + " and I am " + str(age)  + " years old.")
who_am_i()

#adding in params
def add_one_hundred(num):
	print(num + 100)

add_one_hundred(100)

def add(x,y):
	print(x+y)
add(7,7)
add(305,207)
#using return
def multiply(x,y):
	return x * y
print(multiply(5,5))

def sqr_root(x):
	return x ** .5
print(sqr_root(64))

print()

#boolean expressions (True or False)
print("Boolean expressions:")
bool1 = True
bool2 = 3*3 == 9
bool3 = False
bool4 = 3*3 != 9
print(bool1,bool2,bool3,bool4)
print(type(bool1))
bool5 = "True"
print(type(bool5))

print()

#Relational and Boolean Operators
gt = 7 > 5
lt = 5 < 7
gte = 7 >= 7
lte = 7 <=7
print(gt,lt,gte,lte)

test_and = (7 > 5) and (5 < 7)
test_or = (7 > 5) or (5 < 7)
test_not = not True

print(test_and, test_or, test_not)
print()

#Conditionals
print("Conditionals")
def soda(money):
	if money >= 2:
		return "Soda!"
	else:
		return "no soda :("
print(soda(1) + " - " + soda(2))

def alcohol(age,money):
	if(age>=21) and (money >= 5):
		return "tipsy"
	elif (age>=21) and (money < 5):
		return "need money"
	elif (age < 21) and (money>=5):
		return "need years"
	else:
		return "need money and years on ya"
print(alcohol(25,5))
print(alcohol(15,8))
print(alcohol(21,4))
print(alcohol(18,2))
print()

#Lists
print("Lists:")
movies = ["The Hangover", "Hot Shots", "Airplane", "The Exorcist"]
print(movies[0])
print(movies[0:2]) #elements 0 and 1 (up to but not including 2nd element)
print(movies[1:]) #slice, 1st element onward
print(movies[:1]) #slice, up to the 1st element (just the 0th element)
print(movies[-1]) #takes last item (underflow)
print(len(movies))

movies.append("JAWS")
print(movies)

movies.pop() #removes last item in list
print(movies)

movies.pop(1) #removes 2nd item in list (Hot Shots)
print(movies)

movies = ["The Hangover", "Hot Shots", "Airplane", "The Exorcist"]
person = ["Heath", "Jake", "Leah", "Jeff"]
combined = zip(movies, person)
print(list(combined))
print()

#Tuples
print("Tuples have parentheses, not brackets and cannot change") #immutable
grades = ("A","B","C","D","F")
print(grades[1])
print()

#Looping
print("For loops - start to finish of iterate:")
vegetables = ["cukes","spinach","cabbage"]
for x in vegetables:
	print(x)
print("While loops - execute as long as true:")
i = 1
while i < 10:
	print(i)
	i+=1






```


---

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