Refer to the instructions below and the images attached. Solve using python preferably in repl.it and follow

Fantastic news! We've Found the answer you've been seeking!

Question:

Refer to the instructions below and the images attached. Solve using python preferably in repl.it and follow the skeleton code below.

#This program should use a stack to implement a reverse polish calculator. Â e.g. Â 5x(2+3) Â == Â 5 2 3 + x
# pre-requisite knowledge: how strings are represented in python, CLA, unicode/ascii, ord(), numbers start with a digit or with a '.'
# This calculator must correctly implement, '+', '-', 'x', and '/' operations (we will use little x for multiplication, NOT *).
# THIS VERSION WILL USE Command Line Arguments (CLA)
#Read the instructions tab for all assignment information

def pop(stk,sp) :
# YOUR CODE FOR POP GOES HERE
print("remove this print line later")

def push(val,stk,sp) :
sp[0] = sp[0] + 1
if(sp[0] == len(stk)) :
Â stk.append(val)
else :
Â stk[sp[0]] = val

def calculate(str) : # needs to be cleaned up to handle illegal strings
# creating stack. Â stk[] is an empty stack so the stack pointer (sp) starts as -1. Â Why is sp a list of size 1?
stk = []
sp = [-1]
# YOUR CODE GOES HERE

return stk[0]
Â

def convert_str_types(str) :
print("remove this print line later")
# This procedure must convert the apporpriate elements of list str from strings to floats. Â You can use the following command to cast the string as a float iff str[k] would mathematically be a real number.
# str[k] = float(str[k])
# YOUR CODE GOES HERE

################# MAIN CALLING ROUTINE ################
from sys import * # for CLA

# MUST use x instead of * for multiplation as * has meaning on the command line

str = []
k = 1 #argv[0] is always the name of the file you are running
while(k str.append(argv[k])
k = k + 1
print(str)

# convert the parts of the string that are numbers to floats
convert_str_types(str)

ans = calculate(str)
print(ans)

Reverse Polish Notation is one of the simplest ways to enter data into a calculator. You don't need to worry Â What to do A skeleton code is provided for this assignment that includes the code for.... ...accepting the Restrictions and info: 1. We will be using a python list data structure to model the implementation of a Example Run If the command line input string is as follows: 50 10 4 1 X + The stack of operands initially