Write a basic program that performs simple file and mathematical operations.
a. Write a program that reads dates from input, one date per line. Each date's format must be as follows: March 1, 1990. Any date not following that format is incorrect and should be ignored. Use the find() method to parse the string and extract the date. The input ends with -1 on a line alone. Output each correct date as: 3/1/1990.
b. After the program is working as above, modify the program so that it reads all dates from an input file "inputDates.txt" (an Example file is attached).
c. Modify your program further so that after parsing all dates from the input file "inputDates.txt", it writes out the correct ones into an output file called: "parsedDates.txt".
Ex: If the input is:
March 1, 1990
April 2 1995
7/15/20
December 13, 2003
-1
then the output is:
3/1/1990
12/13/2003

month_list={ "january":"1","february":"2", "march":"3","april":"4", "may":"5", "june":"6","july":"7", "august":"8", "september":"9","october":"10", "november":"11", "december":"12"} input_file=open('C:\\Users\\Desktop\\inputDates.txt', 'r') output_file=open('C:\\Users\\Desktop\\parsedDates.txt','w') for each in input_file: if each!="-1": lis=each.split() if len (lis) >=3: month=lis [0] day=lis[1] year=lis [2] if month.lower() in month_list: comma=day[-1] if comma==',': day=day[:len (day)-1] month_number=month_list[month.lower()] ans-month_number+"/"+day+"/"+year output_file.write (ans) output_file.write("\n") output_file.close() input_file.close()

- O X parsedDates - Notepad File Edit Format View Help 3/1/1990 12/13/2003

- X inputDates - Notepad File Edit Format View Help March 1, 1990 April 2 1995 7/15/20 December 13, 2003 -1

cheers i hope this helped !!

lhmarianateixeira lhmarianateixeira · Answer 2 · 2022-03-11T11:23:15+01:00

In this exercise we have to use the knowledge in computer language to write a code in python, like this:

the code can be found in the attached image

to make it simpler we have that the code will be given by:

month_list ={"january": "1", "february": "2", "march": "3", "april": "4", "may": "5", "june": "6", "july": "7", "august": "8", "september": "9", "october": "10", "november": "11", "december":"12"}

input_file = open ('C:\\Users\\Desktop\\inputDates.txt', 'r') output_file =

open ('C:\\Users\\Desktop\\parsedDates.txt', 'w') for each

in input_file:if each

!="-1":lis = each.split ()if len

(lis) >= 3:month = lis[0] day = lis[1] year = lis[2] if month

.lower ()in month_list:comma = day[-1] if comma

== ',': day = day[:len (day) - 1] month_number =

month_list[month.lower ()]ans - month_number + "/" + day + "/" +

year output_file.write (ans) output_file.write ("\n") output_file.

close ()input_file.close ()

See more about python at brainly.com/question/26104476