dof main$()$:

filename $=$ input $("$Enter name of file: $")$

# add data validation on file name

valid$\_$file $=$ Falso

while not valid$\_$file:

$t{x}^{2}y$:

file $=$ open $($filename$,{?}^{\text{'}}{x}^{\text{'}})$

valid file $=$ Thue

oxcopt FileNotFoundExzox:

pxint $($filename$,$ "cannot be located"$)$

filoname $=$ input $("$Entor name of file: $")$

print $("$Data filo", filename, "oponed successfully"$)$

print $()$

IF TODO: add vaziablen to sum the worthe and count numbex to be reoxdexed H minimum atook level noquired cutoff $=$ int $($input$("$Entex minimun stock level: $"))$

print $()$ product $=$ Eile, readilne $(),$ xstzip $(|$n $($:${?}^{\text{'}}$