(+20) Write a python program that:

Ask the user for a string and creates the following dictionary: The values are the letters in the string, with the corresponding key being the place in the string. For example if the user entered the string CSC120 then create the dictionary d

d = {0:'C', 1:'S', 2:'C', 3:'1', 4:'2', 5:'0'}

Display the length of the dictionary d In this case it is 6

Ask the user for a key(integer). If the key is in the dictionary display the corresponding value. As an example if the user entered 2 display C if the user entered a key that was not in the dictionary display Error key not found

Ask the user for a value (one of the characters). If the value is in the dictionary display Value found otherwise display Value not found. As an example if the user entered C display Value found

Ask the user for a string of digits, separated by a comma. Print out the corresponding values for those digits.

For example if the user enters the string 0,1, 4 then print out C S 2 (or CS2 ) At issue is how to handle out of range digits for example, in our case, any digits in the range 05 should generate a corresponding value but any digit(s) > 5 OR < 0 has to handled appropriately -- I leave that to you to decide ( generate an error message is a suggestion )

Tutorial on sets and dictionary can be found at : (left side in the Table of Contents 5.4 and 5.5 https://docs.python.org/2/tutorial/datastructures.html

Tutorial on strings can be found at

Try your code on the string CSC 120ComputingFundamentals

See the Lab09Template.py in our Source code tab for hints on the lab Duplicated here

#lab09Template.py

names = { 10:"Euclid", 20:"Archimedes", 30:"Newton", 40:"Descartes", 50:"Fermat", 60:"Turing", 70:"Euler", 80:"Einstein", 90:"Boole", 100:"Fibonacci", 110:"Nash" } print("1 ",names.keys()) # print keys print("2 ", names.values() ) # insert names[120] = "Hopper" print("names == ", names) #use in to search for keys as well as non-existance keys key = 110 if key in names.keys(): print("4 ",names[key]) else: print("error key == 110") s = "Euler" if s in names.values(): print(" 3 YES") else: print("NO Euler") for key in names: print(key, names[key]) print("====VALUES====") for values in names.values(): print(values) print("====string manipulation====") s = (input("Enter integers seperated by a comma ")) # NOTE cannot convert 110,20,3 into an integer print('s ==' , s) s = s.split(',') # now split using , as a seperator, into individual words print('1',s, len(s) ) # still a string but separated into words x = int(s[0]) # now convert to a string print('x == ', x) # now print it print('value for the key == ',x, ' is ', names[x]) for i in s: print('i == ', i) print ("=================SET THEORY=============") a = set('ABCD') b = set('CDEFF') print(" a == ", a) # unique letters in a print(" b == ", b) # unique letters in b print(" a - b ",a - b) # letters in a but not in b print( "a | b ", a | b) # letters in a or b print( "a & b ", a & b) # letters in both a and b print( "a ^ b ", a ^ b) # letters in a or b but not both

names =={100: 'Fibonacci', 70: 'Euler', 40: 'Descartes', 10: 'Euclid', 110: 'Nash', 80: 'Einstein', 50: 'Fermat', 20: 'Archimedes', 120: 'Hopper', 90: 'Boole', 60: 'Turing', 30: 'Newton'}

3 YES

100 Fibonacci

70 Euler

40 Descartes

10 Euclid

110 Nash

80 Einstein

50 Fermat

20 Archimedes

120 Hopper

90 Boole

60 Turing

30 Newton

====string manipulation====

Enter integers separated by a comma 10,20,3

s == 10,20,3

1 ['10', '20', '3'] 3

x ==10

value for the key ==10isEuclid

i ==10

i ==20

i ==3

=================SET THEORY=============

a =={'D', 'A', 'C', 'B'}

b =={'D', 'F', 'C', 'E'}

a - b {'A', 'B'}

a | b{'F', 'A', 'B', 'D', 'C', 'E'}

a & b{'D', 'C'}

a ^ b{'F', 'A', 'B', 'E'}