Create a simple calculator application that asks a user to enter two numbers and the operation (e.g. +, -, x, etc.) that they’d like to perform on the numbers.

It looks like you made duplicate functions containing the same code, making it difficult to understand what block should be running to accomplish the desired output of the required task.

Please try to clean up your code so that it is clear what your code is doing and meeting the task specifications.

#Compulsary Task1

#main.py:

#function to find a op b and return result

#main.py:
#function to find a op b and return result
def evaluate(a, b, op):
    #finds result based on op
    if(op == '*'):
        return a*b;
    elif op == '-':
        return a-b;
    else:
        return a+b;
    
#function to validate input operator
def getOp():
    while True:
        op = input('\nEnter operator[+,-,*]: ')[0]
        #checks if operator is * or + or -
        if (op != '*' and op != '+' and op != '-'):
            print("Not an operator! Please enter an operator within.")
            continue
        else:
            break
    return op

#function to validate input number
def getNum():
    while True:
        #catch exception if input number is not integer
        try:
            number = int(input('\nEnter Number: '))
        except ValueError:
            print("Not an integer! Please enter an integer.")
            continue
        else:
            break
    # returns number after validation
    return number

#function to validate file name
def getFile():
    while True:
        filename = input("\n Enter Filename or path : ")
        try:
            #append filename to the directory where the file is
           fname ="C:\\Users\\Dell\\Dropbox\\"+filename
           f = open(fname)
        except FileNotFoundError:
            print("Wrong file or file path")
        else:
            break
    #returns file pointer
    return f

#to convert string to individual character list
def split(word):
    return list(word)

print("\n select a choice :\n 1. Input Equation\n 2. Input file name of the equations")
choice = int(input("\n Enter Choice : "))
if(choice == 1):
    #path of output file
    path = r'output_new_file.txt'
    #opens output file in write mode
    f = open(path,'w')
    ch = 1
    #gets user choice
    while(ch != '0'):
        #gets the input numbers
        number1 = getNum()
        number2 = getNum()
        #gets the operator
        op = getOp()
        #finds the result value
        result = evaluate(number1,number2,op)
        #creates the expression
        str_line = str(number1)+str(op)+str(number2)+'='+str(result);
        #displays output
        print(str_line)
        f.close()
        #opens file in append mode so that already written content not deleted 
        f = open(path,'a')
        #writes expression
        f.write(str_line+"\n")
        #asks user choice to quit
        ch = input("\nIf u want to quit press 0 .....")
    #closes file
    f.close()

elif choice == 2:
   #path of output file
    path = r"output_file.txt"
    #opens output file in write mode
    f = open(path,'w')
    #opens output file in write mode
    ip_file = getFile()
    data = ip_file.read().split("\n")
    for x in range(0,len(data)):
        #gets each char list --> 1+2 as 1, +, 2
        x1 = split(data[x])
        number1 = int(x1[0])
        number2 = int(x1[2])
        op = x1[1]
        #finds the result value
        result = evaluate(number1,number2,op)
        #creates the expression
        str_line = str(number1)+str(op)+str(number2)+'='+str(result);
        #displays output
        print(str_line)
        f.close()
        #opens file in append mode so that already written content not deleted 
        f = open(path,'a')
        #writes expression
        f.write(str_line+"\n")
    f.close()
    ip_file.close()
f.close()