students $=[]$ studentCount $=0$ def addStudent$($studentCount$)$: student$\_$id $=$ input$("$Enter student ID: $")$ name $=$ input$("$Enter student name: $")$ age $=$ input$("$Enter student age: $")$ gpa $=$ input$("$Enter student GPA: $")$ newstudent $=\{"$id$"$: student$\_$id$,$ "name": name, "age": age, "gpa": gpa $\}$ students.append$($newstudent$)$ # Append the variable, not a string return studentCount $+1$ def displayStudents$()$: if not students: print$("$No students to display."$)$ else: for student in students: print$($f$"$ID: $\{$student$[\text{'}$id$\text{'}]\},$ Name: $\{$student$[\text{'}$name$\text{'}]\},$ Age: $\{$student$[\text{'}$age$\text{'}]\},$ GPA: $\{$student$[\text{'}$gpa$\text{'}]\}")$

Now I get this NameError: name 'newstudent' is not defined. Did you mean: 'addStudent'? PLEASE HELP i have been at this alllll day I also keep getting this error

print$($f$"$ID: $\{$student$[\text{'}$id$\text{'}]\},$Name: $\{$student$[\text{'}$name$\text{'}]\},$Age: $\{$student$[\text{'}$age$\text{'}]\},$GPA: $\{$student$[\text{'}$gpa$\text{'}]\}")$

TypeError: string indices must be integers, not $\text{'}$str$\text{'}$