training day4

                                              SETS 

fruits = {"apple","banana","cherries"}

 for x in fruits:

      print(x)

To check whether the item is there or not in the set use :

                                  print("banana" in fruits)

   It will tell only true or false but not index because it is unindexed.

To add any single item 

                                fruits.add("orange")

If  we want to add multiple items

                                fruits.update(["mango","orange"])

If there is no item in the set, we want to remove it will give error

                                fruits.remove("grapes")

To remove such kind of errors we use discard function 

                              fruits.discard("Grapes")

                   ouput  :

                            {"apple","banana","cherries"}

                                       DICTIONARIES

It's basic syntax is {"key":"value"}

                Example : details = {"name":"John",

                                                  "age":20,

                                                  "address" : "xyz"}

                     

To get specified field  

                Example : print(detail["age"])

To change any detail 

                Example : detail ["age"]=25

To add any item 

               Example : detail["color"] = "red"

                                 print(detail)

To remove any item

             Example : detail.pop["age"]

                             print (detail)

LOOPS in dictionaries6

for x in detail:

     print(x)

This will print only keys.

for x in details:

  print(detail[x])

This will print only values.

for x in detail.values():

  print(x)

This will print only values.

for x,y in detail.items():

    print(x,y)

This will print key as well as values.

Program to convert integer into words

dic = {"1":"one","2":"Two","3":"Three","4":"Four","5":"five","6":"six","7":"seven","8":"eight","9":"nine"}y = input("Enter combination of integers") 

s = " "

for x in y:

  z = (dic.get(x))

  s += z + " "

print(s)