Added dictionary to switch between user selections
Added exception for numeric input and functions to write letters to a file
Changed string formatting to .format method
Added exception for IOError in opening file
mailroom.py updated with dictionaries. nearly done, just need to add 'batch_print()' functionality
Should be ok for submission now.
Added Functional Files assignment
Added: report sorting and checking for mailroom_letters dir.
Merge branch 'list_comprehension'

Merging to master
Fixed TODO in map function and other minor adjustments
Formatted output of map function in writing to file
first commit
Finished dict_set_comprehensions.py
Add safe_input.py
in progrss
working version. Might yet try a version that doesn't mangle punctuation
trying lambda function, but seems to repeat last fun in list
close but no cigar
function works with kwarg
Trigrams.py works