Mylib.py def allInOne(n1, n2): return {"add":plus(n1, n2), "sub":subtract(n1, n2), "mult":multiply(n1, n2), "div": divide(n1, n2)} def IsInRange(lr, hr, n): return lr < n and n < hr #add 2 numbers def plus(n1,n2): add = n1 + n2 return add #subtract 2 numbers def subtract(n1, n2): sub = n1 - n2 return sub #multiply 2 numbers def multiply(n1, n2): mult = n1 * n2 return mult #division, n2 should not be zero def divide(n1, n2): try: div = n1/(n2 + 0.0) return div except ZeroDivisionError as e: print("The result of %s/%s = %s" % (n1, n2,"You cannot divide by Zero")) except Exception : print("Invalid input" , n1, n2) #expression calculator def scalc(val): try: #the epression is assumed to be comma separated ns = val.split(",") #split it into 3 parts #remove whitespaces in the components n1 = int(ns[0].strip()) n2 = int(ns[1].strip()) op = ns[2].strip() #check if operator is one of the supported if op == "*": return multiply(n1, n2) elif op == "/": return divide(n1, n2) elif op == "+": return plus(n1, n2) elif op == "-": return subtract(n1, n2) else: print("Unknown operator", op) #in case of invalid input catch the error except Exception : print("Invalid input:" , val) W6_first_last.py # Program name : # Student Name : # Course : ENTD220 # Instructor : # Date : 02/12/2020 # Description : Expression & Arithmetic Calculator # Copy Wrong : This is my work import Mylib def doScalc(): print("---------Expression calculator------------------") print("Enter the expression with format N1,N2,operator:") print("Supported operator * , /, -, +") print("E.g 5, 4, *)") val = input() res = Mylib.scalc(val) print('The result of "' + val + '" is', res) def showList(): print("1) Add two numbers") print("2) Multiply two numbers") print("3) Subtract two numbers") print("4) Divide two numbers") print("5) Scalc") print("6) All in one") print("7) Exit") def getUserInput(): low = int(input("Enter Lower range:")) high = int(input("Enter Higher range:")) n1 = int(input("Enter first number:")) n2 = int(input("Enter second number:")) return [low, high, n1 , n2] def doCalculation(op): user = getUserInput() low = user[0] high = user[1] n1 = user[2] n2 = user[3] if Mylib.IsInRange(low , high, n1) and \ Mylib.IsInRange(low , high, n2): if op == "+": res = Mylib.plus(n1, n2) elif op == "*": res = Mylib.multiply(n1, n2) elif op == "-": res = Mylib.subtract(n1, n2) elif op == "/": res = M ...

1. Mylib.py
def allInOne(n1, n2):
return {"add":plus(n1, n2),
"sub":subtract(n1, n2),
"mult":multiply(n1, n2),
"div": divide(n1, n2)}
def IsInRange(lr, hr, n):
return lr < n and n < hr
#add 2 numbers
def plus(n1,n2):
add = n1 + n2
return add
#subtract 2 numbers
def subtract(n1, n2):

2. sub = n1 - n2
return sub
#multiply 2 numbers
def multiply(n1, n2):
mult = n1 * n2
return mult
#division, n2 should not be zero
def divide(n1, n2):
try:
div = n1/(n2 + 0.0)
return div
except ZeroDivisionError as e:
print("The result of %s/%s = %s" % (n1, n2,"You cannot
divide by Zero"))
except Exception :
print("Invalid input" , n1, n2)

3. #expression calculator
def scalc(val):
try:
#the epression is assumed to be comma separated
ns = val.split(",")
#split it into 3 parts
#remove whitespaces in the components
n1 = int(ns[0].strip())
n2 = int(ns[1].strip())
op = ns[2].strip()
#check if operator is one of the supported
if op == "*":
return multiply(n1, n2)
elif op == "/":
return divide(n1, n2)
elif op == "+":
return plus(n1, n2)

4. elif op == "-":
return subtract(n1, n2)
else:
print("Unknown operator", op)
#in case of invalid input catch the error
except Exception :
print("Invalid input:" , val)
W6_first_last.py
# Program name :
# Student Name :
# Course : ENTD220
# Instructor :
# Date : 02/12/2020
# Description : Expression & Arithmetic Calculator
# Copy Wrong : This is my work
import Mylib
def doScalc():
print("---------Expression calculator------------------")
print("Enter the expression with format N1,N2,operator:")
print("Supported operator * , /, -, +")
print("E.g 5, 4, *)")
val = input()
res = Mylib.scalc(val)

5. print('The result of "' + val + '" is', res)
def showList():
print("1) Add two numbers")
print("2) Multiply two numbers")
print("3) Subtract two numbers")
print("4) Divide two numbers")
print("5) Scalc")
print("6) All in one")
print("7) Exit")
def getUserInput():
low = int(input("Enter Lower range:"))
high = int(input("Enter Higher range:"))
n1 = int(input("Enter first number:"))
n2 = int(input("Enter second number:"))
return [low, high, n1 , n2]
def doCalculation(op):
user = getUserInput()
low = user[0]
high = user[1]
n1 = user[2]
n2 = user[3]
if Mylib.IsInRange(low , high, n1) and
Mylib.IsInRange(low , high, n2):
if op == "+":
res = Mylib.plus(n1, n2)
elif op == "*":
res = Mylib.multiply(n1, n2)
elif op == "-":
res = Mylib.subtract(n1, n2)
elif op == "/":
res = Mylib.divide(n1, n2)
print("%d %s %d = %d" % (n1, op, n2, res))

6. else:
print("Error: input out of range")
def doAllInOne():
user = getUserInput()
low = user[0]
high = user[1]
n1 = user[2]
n2 = user[3]
if Mylib.IsInRange(low , high, n1) and
Mylib.IsInRange(low , high, n2):
mydict = Mylib.allInOne(n1, n2)
print("%d + %d = %d" % (n1, n2, mydict["add"]))
print("%d - %d = %d" % (n1, n2, mydict["sub"]))
print("%d * %d = %d" % (n1, n2, mydict["mult"]))
print("%d / %d = %d" % (n1, n2, mydict["div"]))
def main():
while True:
showList()
action = int(input("What do you want to do?"))
if action == 7:
break;
if action == 1:
user = getUserInput
doCalculation("+")
elif action == 2:
doCalculation("*")
elif action == 3:
doCalculation("-")
elif action == 4:
doCalculation("/")
elif action == 5:
doScalc()
elif action == 6:
doAllInOne()

7. print()
main()
print("Thanks for using our calculator!")