from collections import deque

def calculate$($expression$)$:

stack $=$ deque$()$

for token in expression:

if token.isdigit$()$:

stack.append$($int$($token$))$

elif token in $[\text{'}+\text{'},\text{'}-\text{'},\text{'}*\text{'},\text{'}/\text{'}]$:

if stack$)<mn\; id="EditorElement\_32349">2</mn>$ :

raise ValueError$("$Not enough operands for operator"$)$

operand $2$ stack.pop$()$

operand$1=$ stack.pop$()$

if token $==\text{'}+\text{'}$ :

stack.append$($operand$1+$ operand$2)$

elif token $==\text{'}-\text{'}$:

stack.append$($operand$1-$ operand$2)$

elif token $==\text{'}*\text{'}$ :

stack.append $($operand $1*$ operand$2)$

elif token $==\text{'}/\text{'}$ :

stack.append$($operand$1//$ operand$2)$ # Use $//$ for integer division

if len$($stack$)!=1$:

raise ValueError$("$Invalid expression"$)$

return stack$[0]$

# Expression to be calculated

expression $=[10,**,2,-,15]$

# Calculate and print the result

result $=$ calculate $($expression$)$

print$("$Result:$",$ result$)$

I$\text{'}$m getting an error that says ValueError: Not enough operands for operator