Python Tutorial - Chapter One

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So in this chapter we are going to learn the basic functions of Python one of the easiest languages to learn and write to me.

print()

The first function is

print("Hello, World!")

This will print "Hello, World!" in your shell.

Comments

You can use comments to talk about what a function or piece of code does so when you come back in 1 week it doesn't look like gibberish. To write a comment you use the # like this

#This is a comment.
#You can use this to write info about your code.

Variables

To define a variable you write the name of your variable then an equal sign and finnish by entering your value as string(str(), "") or as integer(int())

x = 10
#A variable of type int()
y = "hello"
#A variable of type str()

Functions

A function is a "command" that you can run whenever you want(as long that it's defined(it exists)). To make a function you define it with:

#function called yourfunction()

def yourfunction():
	print("yourprint")

#To call(execute) the function you write: 

yourfunction()

#If you forget the parentheses it will tell you where in ram the function is.
#This will print "yourprint" in the shell.

If

The if command checks if something is equal(==), not equal(!=), less than(<), greater than(>), less or equal than(<=) or greater or equal than(>=). In short searches for logic. Example:

count = 1
if(1 == count):
	print("True")
#This will return "True" because 1 == count

While

The while command checks for logic it's like the if function except continuing the code as long as the logic is true there is a loop. Example:

count = 0
#This checks if count is not equal or still smaller than 10
while(10 >= count):
	print(count)
	count += 1
	#We are adding 1 to count we also can use "count = count + 1"