Assuming that nan is float('NaN'), not a string, you can use the following code to delete all NaN from the list.
import mathaa = [100,200,float('nan'),300,float('nan'),400]bb = [x for x in aa if not math.isnan(x)]print(bb)Output[100, 200, 300, 400]
import mathaa = [100,200,float('nan'),300,float('nan'),400]bb = [x for x in aa if not math.isnan(x)]print(bb)
Output[100, 200, 300, 400]