basics of python

 

BASICS OF PYTHON:

Eg1: To print Helloworld:

print("Hello World")

Eg2: To print the sum of 2 numbers

a=10 

  b=20 

print("The Sum:",(a+b))

3.printing all keywords at once using "kwlist()"

import keyword

print("The list of keywords is : ")

print(keyword.kwlist)

4.Input From User

val = input("Enter your value: ")

print(val)

5.Input multiple values at a time.

a=list(map(int,input().split()))

print(a)

6.comments in python

single line: print("Hello, World!") #This is a comment

multi line:  """

This is a comment

written in

than just one line

"""

print("Hello, World!")

7.variables

x = 5

y = "John"

print(x)

print(y)

8.casting:

x = str(3)    # x will be '3'

y = int(3)    # y will be 3

z = float(3)  # z will be 3.0

9.Type of variable:

x = 5

y = "John"

print(type(x))

print(type(y))

10.IF_ELSE:

a = 33

b = 33

if b > a:

  print("b is greater than a")

elif a == b:

print("a and b are equal")

11.FOR LOOP:

fruits = ["apple", "banana", "cherry"]

for x in fruits:

  print(x)

a=[1,2,3,4,5]

for i in range(len(a)):

print(i)

12:WHILE LOOP:

i = 1

while i < 6:

  print(i)

  i += 1

13: Break Statement

-> the break statement we can stop the loop even if the while condition is true

i = 1

while i < 6:

  if (i == 3):

    break

  print(i) #prints 1 and 2.

  i += 1

14: Continue Statement

->the continue statement we can stop the current iteration, and continue with the next:

i = 0

while i < 6:

  i += 1

  if i == 3:

    continue

  print(i) #skip the value 3.

15. Functions

  ->No parameters in function:

def my_function():

  print("Hello from a function")

my_function()

  ->passing parameters in function:

def my_function(food):

  for x in food:

    print(x) #prints apple,banana and cheery.

fruits = ["apple", "banana", "cherry"]

my_function(fruits)

16.Lambda function

->Single variable

x = lambda a : a + 10

print(x(5)) #prints 15

->Multiple variables:

x = lambda a, b, c : a + b + c

print(x(5, 6, 2)) #prints 13.