Write a python program Write a function called solveFile(inputfilename, outputfi

Question

Write a python program

Write a function called solveFile(inputfilename, outputfilename). It takes two strings parameters which are filenames. The input file will have multiple lines, where each line will be of the form a number, followed by a space, followed by one of 'add' or 'sub', followed by a space, followed by another number. The numbers will be whole numbers for e.g. a possible input file could have 23 add 7 10 add 9 3 sub 2 5 add 4 Your function should go through this file and create the output file, where each line will be the answer to the line in the input file. for the above example, the output file should have 30 19 1 9 Your function does not return anything

Explanation / Answer

Open Python 2.7 IDE, and File ->New Window and open a new window and write code

#The method definition solveFile that takes two input
#file arguments inputfilename, outputfilename .
#read input file and split the lines into words
#and check if words operation is add or sub
#then perform the mathematical operation and
#write to output file

def solveFile(inputfilename, outputfilename):
    #open output file
    writer=open(outputfilename,'w')
    #open input file
    with open(inputfilename,'r') as file:
        //#read lines
        lines=file.readlines()
        #read each line
        for line in lines:
            #split line into words
            words = line.split()
            #conver word to int
            value1=int(words[0])
            #middle is operation
            operation=words[1]
             #conver word to int
            value2=int(words[2])
            #check operation is add then write to output file
            if operation == "add":
                writer.write(str(value1+value2)+" ")
                #check operation is sub then write to output file
            elif operation == "sub":
                writer.write(str(value1-value2)+" ")
    #close input file
    file.close()
    #close output file
    writer.close()
#call solveFile         
solveFile("input.txt", "output.txt")

-------------------------------------------------------------------------

input.txt

23 add 7
10 add 9
3 sub 2
5 add 4

output.txt

30
19
1
9

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.