name error "name"is not defined

[MaartenRo]

Hi,

I am doing an exercise but somehow my code doesn't work. It should ask for a colorname and when the user types red, orange, yellow, green or blue it should state that the color is in the list.

I get this error message when running the program:

Error:
    while str.upper(ColorSelect) != "STOP":
NameError: name 'ColorSelect' is not defined

What am i doing wrong?

Thanks in advance for the help!

Colors = ["Rood", "Oranje", "Geel", "Groen", "Blauw"]

Colorselect = ""

while str.upper(ColorSelect) != "STOP":
   ColorSelect = input("Typ een kleurnaam: ")
   if (Colors.count(ColorSelect) >= 1):
      print("De kleur staat in een lijst!")
   elif (str.upper(ColorSelect) !="STOP"):
      print("De kleur staat niet in een lijst.")

---

I have another problem in this code: unexpected indent error before " aantal: ", ThisItem[1])

What is the error?
Any input is very much appreciated!

from collections import Counter

MyList = [1, 2, 3, 4, 1, 2, 3, 1, 2, 1, 5]
ListCount = Counter(MyList)

print(ListCount)

for thisItem in ListCount.items():
   print("Item: ", ThisItem[1])
         " aantal: ", ThisItem[1])
print("De waarde 1 verschijnt {0} keer."

      .format(ListCount.get(1)))