def calculate$\_$mean$($numbers$)$:

$"""$Calculate the mean of a list of numbers."""

return sum$($numbers$)/$ len$($numbers$)$

def calculate$\_$median$($numbers$)$:

$"""$Calculate the median of a list of numbers."""

numbers.sort$()$

n $=$ len$($numbers$)$

#this line calculates the middle index of list

mid $=$ n $//2$

#this line checks if the length of the list is even if it is the code then calculates the median as the avg of the

#two middle numbers

if n $\%2==0$:

return $($numbers$[$mid $-1]+$ numbers$[$mid$])/2$

else:

return numbers$[$mid$]$

def calculate$\_$mode$($numbers$)$:

$"""$Calculate the mode of a list of numbers."""

frequency $=\{\}$

for number in numbers:

frequency$[$number$]=$ frequency.get$($number$,0)+1$

max$\_$freq $=$ max$($frequency$.$values$())$

modes $=[$key for key, val in frequency.items$()$ if val $==$ max$\_$freq$]$

if len$($modes$)==$ len$($numbers$)$:

return None # If all numbers are unique, no real mode

return modes

def calculate$\_$skewness$($numbers$)$:

$"""$Calculate the skewness of a list of numbers."""

mean $=$ calculate$\_$mean$($numbers$)$

n $=$ len$($numbers$)$

m$3=$ sum$(($x $-$ mean$)**3$ for x in numbers$)/$ n

m$2=$ sum$(($x $-$ mean$)**2$ for x in numbers$)/$ n

if m$2==0$:

return $0$

skewness $=$ m$3/($m$2**1\mathrm{.}5)$

return skewness

def main$()$:

marks $=[]$

while True:

entry $=$ input$("$Enter marks separated by commas or one at a time $($type 'done' when finished$)$: $")$

if entry.lower$()==$ 'done':

if len$($marks$)<2$:

print$("$Please enter at least two numbers."$)$

continue

break

try:

# Check if multiple marks were entered

if $\text{'},\text{'}$ in entry:

new$\_$marks $=[$int$($x$.$strip$())$ for x in entry.split$(\text{'},\text{'})]$

else:

new$\_$marks $=[$int$($entry$.$strip$())]$

marks.extend$($new$\_$marks$)$

except ValueError:

print$("$Invalid input. Please enter only numbers."$)$

continue

while True:

print$("$

Menu:"$)$

print$("1.$ Print the mean of the numbers"$)$

print$("2.$ Print the median of the numbers"$)$

print$("3.$ Print the mode of the numbers"$)$

print$("4.$ Print the skewness of the numbers"$)$

print$("5.$ Enter a NEW set of numbers"$)$

print$("6.$ Add more numbers to the current list"$)$

print$("7.$ Exit the application"$)$

choice $=$ input$("$Choose an option: $")$

if choice $==\text{'}1\text{'}$:

print$("$

$""$Mean:$",$ calculate$\_$mean$($marks$))$

elif choice $==\text{'}2\text{'}$:

print$("$

$""$Median:$",$ calculate$\_$median$($marks$))$

elif choice $==\text{'}3\text{'}$:

mode$\_$result $=$ calculate$\_$mode$($marks$)$

if mode$\_$result is None:

print$("$

$""$No mode, all values are unique."$)$

else:

print$("$

$""$Mode:$",$ mode$\_$result$)$

elif choice $==\text{'}4\text{'}$:

print$("$

$""$Skewness$",$ calculate$\_$skewness$($marks$))$

elif choice $==\text{'}5\text{'}$:

marks $=[]$ # Reset the list

continue

elif choice $==\text{'}6\text{'}$:

continue #Just continue to add more numbers

elif choice $==\text{'}7\text{'}$:

print$("$

$""$Exiting the program."$)$

break

else:

print$("$

$""$Invalid choice. Please enter a number between $1$ and $7.")$

# Check if we need to continue after adding more numbers

if choice $==\text{'}6\text{'}$:

new$\_$entries $=$ input$("$

$""$Enter new marks $($separated by commas$)$: $")$

try:

new$\_$marks $=[$int$($x$.$strip$())$ for x in new$\_$entries.split$(\text{'},\text{'})]$

marks.extend$($new$\_$marks$)$

except ValueError:

print$("$

$""$Invalid input. Please enter only numbers."$)$

if $\_\_$name$\_\_=="\_\_$main$\_\_"$:

main$()$

In this code the print$("4.$ Print the skewness of the numbers"$)$

print$("5.$ Enter a NEW set of numbers"$)$

print$("6.$ Add more numbers to the current list"$)$

doesnt work correctly and it just show the menu again please fix the code to make it show those options work as intended im pretty stuck on it