Removing nan values from a dict

[menator01]

nan = 0
mylist = [438.4, 439.18, 439.9, 440.21999999999997, 440.38, 441.08000000000004, nan, nan, nan, nan]

for i in range(len(mylist)):
    if i >= 6:
        mylist.pop()

print(mylist)

Output:
[438.4, 439.18, 439.9, 440.21999999999997, 440.38, 441.08000000000004]