# Write a Python program to cast the provided value as a list if it's not one.  
 def cast_list(val):
  return list(val) if isinstance(val, (tuple, list, set, dict)) else [val]
d1 = [1]
print(type(d1))
print(cast_list(d1)) 
d2 = ('Red', 'Green')
print(type(d2))
print(cast_list(d2)) 
d3 = {'Red', 'Green'}
print(type(d3))
print(cast_list(d3))
d4 = {1: 'Red', 2: 'Green', 3: 'Black'}
print(type(d4))
print(cast_list(d4))
