1. ascii_dictionary.py
2. using_dictionary.py
3. years_dictionary.py

# Demonstrate use of dictionary, using ASCII values
# By Sara Sprenkle

# create an empty dictionary
ascii= {}

ordValue = ord('a')

while ordValue <= ord('z'):
    # add mapping to dictionary of chr(ordValue) --> ordValue (ordinal value)
    char = chr(ordValue)
    ascii[char] = ordValue
    ordValue += 1

print(ascii)
print(sorted(ascii))

# Demonstrate use of dictionary, using ASCII values
# by Sara Sprenkle

# create an empty dictionary
ascii= {}

x = ord('a')

while x <= ord('z'):
    # add mapping to dictionary of chr(x) --> x (ordinal value)
    char = chr(x)
    ascii[char] = x
    x+=1

# iterates through the keys in the dictionary
for letter in ascii:
    # print the key and its associated value
    print(letter, ascii[letter])

# display the type that is returned by dictionary methods
print(type(ascii.keys()))
print(type(ascii.values()))
print("The number of keys is", len(ascii.keys()))

# iterate through the values
print("Iterate through the values:")
for val in ascii.values():
    print(val)
    
keyList = list(ascii.keys())
print("as <dict_keys>:\n", ascii.keys())
print("as a list:\n", keyList)

# printing in order by key
keysSorted = list(ascii.keys())
keysSorted.sort()

for letter in keysSorted:  # alternative: sorted(keysSorted)
    # print the key and its associated value
    print(letter, ascii[letter])

    
for letter in sorted(ascii):
    print(letter, ascii[letter])

# Given a file of the form <firstname> <class>
# creates a mapping between the first names and class
# (In progress...)
# by CSCI 111

FILENAME="data/roster.dat"

# open the file for reading
yearsFile = open(FILENAME, "r")

# create dictionary


# read each line of the file
for line in yearsFile:
    # split the line on space
    studentInfoList = line.split()
    
    # extract the first name and classyear from the split line
    firstName = studentInfoList[0]
    classYear = studentInfoList[1]
    
    # add mapping to the dictionary

yearsFile.close()

# display the info -- is it correct?


# prompt the user for which student they are looking for.