Robofied

## Inputting subjects marks 
sub_1 = 40
sub_2 = 50

## Calculating avergare of both subjects
avg_marks = (sub_1+sub_2)/2

Robofied

## Checking condition if marks>80 then student is good.
if avg_marks >= 80:
    print("Student is very good with marks %d" %avg_marks)

## Checking condition if marks is in range(60,80) then student is average. 
elif (avg_marks<80 and avg_marks> 60):
    print("Student is average with marks %d" %avg_marks)


## Checking condition if marks is below 60 then needs improvement

Robofied

## Checking condition if marks>80 then student is good.
if avg_marks >= 80:
print("Student is very good with marks %d" %avg_marks)

Robofied

#Functions without parameters

def functions_without_para():
    print("Hey! You know how to create functions")
    
functions_without_para()

#[Output]:
#Hey! You know how to create functions

Robofied

def student(name,sub1,sub2):
        avg_marks = (sub1+sub2)/2
        if avg_marks >= 80:
           print("%s is very good student with marks %d" %(name,avg_marks)) 
   ## Checking condition if marks is in range(60,80) then student is average.             elif (avg_marks<80 and avg_marks> 60):
           print("%s is average student with marks %d" % (name,avg_marks))

    ## Checking condition if marks is below 60 then needs improvement
    else:
        print("%s needs improvement %d" % (name,avg_marks))

Robofied

## List of multiple students
l = [('Ram',80,90),('seeta',50,30),('Jerry',20,45),('Bellow',60,70),('Geeta',98,78)]

## For checking the marks ## iterating over list
## First unzipping each element as it is stored as a tuple.
## If you don't know this concept don't worry will cover this in intermediate python.    
## Here just for your understanding how useful to define a function

for e in l:
    student(*e)

Robofied

## Creating a global variable
a = "Hello! Welcome to python tutorials."

def func():
  ## It will automatically takes the value of global variable as we didn't define any other local variable "a" inside fubction.
  print(a)
  
## Calling the function toc check what value of "a" will it print.
func()

Robofied

## Creating a global variable
a = "Hello! Welcome to python tutorials."

def func():
  ## It is another local variable of function func()
  a = "Hello! Everyone"
  print(a)
  
## Here it will print the value of global variable "a" which is not changed even if the a's value
## in function func() is changed because func() is not accessing the global variable and then chnaging it.

Robofied

a = "Hello! Welcome to python tutorials."

def func():
  
  ## Now by using "global" keyword we are actually modifying the global variable a instead of creating a new local variable.
  global a
  ## assigning a new value
  a = "Hello!"
  print(a)
  

Robofied

## Already existing standard library, comes already installed while installing Python package.
import os

## using list dir, listing the files and folders in that particular directory.
for e in os.listdir(r'C:\Users\Robofied\Documents\getting started with python'):
    print(e)
    
#[Output]:
## These are the output files conyained in the directory.
.ipynb_checkpoints