PYTHON

_ variable in python

"""Use of _ as a variable
It is to indicate throwaway variables, 
...i.e. variables that are not reused anywhere else (as they are...
        ...not logically important) but for syntax reasons you have to put

This saves space for variables that are actually reused...
...and provides a good mental model for essential and unessential parts...
...of your code

Of course, take this as a guideline. 
There are instances where naming those variables are better for readability...
...especially in group projects

Check out the source for more info!
"""

lst1 = [_ for _ in range(10)]
print(lst1)
# [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]

python variable

string = 'string'
integer = 5
boolean = True

python variable

#declaring different type of variables in python
variable1 = "value" # string
variable2 = 1000000 # integer
variable3 = 10000.0 # real/float
variable4 = True # boolean: True or False

python variables

name="John"
print("Hello "+name)

variable in python

#single name variable
name = "Your name"

#recomended naming of compound or multiple names are seperated by underscore _
some_variable_name = "Name of the the variable"

variables in python

# Variables in Python are used to store some data in it and use it over and
# over again 
# Variables can store Strings, Integers, Floats, Booleans
var_string = "Hello World!"
var_integer = 1234567890	# any number
var_float = 3.14159			# any number with decimal value
var_boolean = True          # True or False

variable in python

#creating variable in python

a = 15 #it is called integer

b = 'apple' #any word or number written in this "" is called string

c = False #True or False is called boolean

d = 2.45 #any number with point is called float

print(a)
print(b)
print(c)
print(d)

#it will print all the values

variables in python

x = 5
y = "John"
print(x)
print(y)

variables in python

Simple terms: a variable is a box that you can put stuff in it such as
strings int booleans

python variable

variable_name = "Hello World"
one_number = 1

variables in python

#Variables
#Name your variable

myvar = 'Variable'
Number = 9

print(myvar, Number, 'are the variables I made')

python variables

x = str(3)    # x will be '3'
y = int(3)    # y will be 3
z = float(3)  # z will be 3.0

print(type(x))
print(type(y))
print(type(Z))

Python Variables

Python Variables are like boxes that store some values

Example of delcaring a variable:

number = 1
name = "Python"
isUseful = True
number_2 = 1.5

python vars

class Fruit:
  def __init__(self, apple = 5, banana = 10):
    self.apple = apple
    self.banana = banana
  
eat = Fruit()

# returns __dict__ of the eat object
print(vars(eat))

python variables

var = 640
number = 604
tr = 623

python variables

#Varibles Guide:
a = 5 #NUMBER
b = "Varibles!" #STRING
c = True #BOOLEN  Hey, this is an edit, sorry for having it as true not True, caps matter.
d = False #BOOLEN Hey, this is an edit, sorry for having it as false not False, caps matter.

Python Variables

name=input('What is your name')
email=input('what is your email')
print(f"Hi {name}! We will be contacting you shortly at {email}")

variables in python

VarName = "Value"
VarName = 56
VarName = True

python variable

variable_name = variable_value #String, integer, float, boolean, ...

Python Variables

x = "Jack"
y = 110
print(x)
print(y)

variables in python

# in python you can assign values to multiple variables in one line

a, b, c = "one", "two", "there"

print(a)
print(b)
print(c)

vars() python

# function vars() is defined as: vars([object]) -> dictionary
# the vars() function takes an object and returns a its __dict__ attribute,
# which is a dictionary of all of its writable attributes

class Person:
	def __init__(self, name = "anonymous", age = 21, employed = True):
		self.name = name
		self.age = age

        
Sam = Person()
John = Person('John', 18)

# notice the 'employed' attribute is not returned
print(vars(Sam))  # {'name': "anonymous", 'age': 21}
print(vars(John))  # {'name': "John", 'age': 18}

python variable

variable_username = "Hello"