How do i append into dict?

[ThomasL]

I´m assuming you want to create a list instead of a dictionary, cause you named your dictionary patientlist which is a contradiction.

But let´s assume you want to use a dictionary you need to do it this way.

patients = {}
for x in range(3):
   patient_name = input('Enter new name: ')
   patients[patient_name] = patient_name
for key, value in patients.items():
    print(key, value)

But using the same content for key and the value is nonsense imho.

So let´s assume you want to create a list of your patient names, do it this way.

patients = []
for x in range(3):
   patient_name = input('Enter new name: ')
   patients.append(patient_name)
for name in patients:
    print(name)