how to find unique values in list in python

import numpy as np

def unique(list1):
    npArray1 = np.array(list1)
    uniqueNpArray1 = np.unique(npArray1)
    return uniqueNpArray.tolist()
  
list1 = [10, 20, 10, 30, 40, 40]
unique(list1) # [10, 20, 30, 40]

mylist = ['nowplaying', 'PBS', 'PBS', 'nowplaying', 'job', 'debate', 'thenandnow']
myset = set(mylist)
print(myset)

mylist = ['nowplaying', 'PBS', 'PBS', 'nowplaying', 'job', 'debate', 'thenandnow']
myset = set(mylist)
print(myset)
mynewlist = list(myset)
#['nowplaying', 'PBS', 'job', 'debate', 'thenandnow']