DivBytes

 Q- how to Print Hello World print("Hello World") Variables in python ------- age = 30   #variable should be intutive so that we can learn any time print(age) Note: Shift+Enter is shortcut to run command 2) ' #' this is for writing the comment in python Rules for Variables--- Variable can not be start with any number like - 1age  Number can use in between and end with variable like - age1 age2 Special characters are not allowed expect _ (underscore) like - age_my Space not allowed in variable  Python is case sensitive  Way to define Variable --- age1,age2 = 30,25  age1 = 30 age2 = 25 age1=age2=30   #if 30 age for both variable   >> Data type the type of data is basically data type Integer = age1 to age3 is basically integer   , Integer is basically full number lets check = type(age1)  #it will give u print int float=  basically decimal values Interest =  30.24 type(Interest) #answer is float Message = ...

Indexing--  it will help u to fetch single character  string= "Python" string[2] # slicing process of fetching a sub-string from the given string  #sequence of charater we can fetch means more than 1 character string="Divyanshu" string[2:4+1]   #basically here number is index value #string[start_index:end+index+1] string = "Hunny"   #indexing agr positive hai to left se count hoga #right se negative me string[:]  #it will give u entire string #now If i want to any characterwise index like string is Hunny and I want un only #string[start_index:end_index+1:step] string[1:4:2] #reverse your string #string[:: -1] string="Baba hunny" string[:: -1] # to convert into lowecase string="New Divyanshu" new_string=string.lower()  #new_string becase we've to create another string print(new_string) s1={1,2,3,4,5}    s2={3,2,8,67,85} s3=s1.union(s2) s3   #isme add hota hai whole value lekin common value update nhi hongi #intersection - ...