Remove a tuple containing nan in list of tuples — Python

Question

I have a long list of tuples and want to remove any tuple that has a nan in it using Python.

What I currently have: x = [(\'Recording start\', 0), (nan, 4), (nan, 7

Answer 1

You could use list comprehension which checks if any of the items in a tuple is NaN. Check is done by first checking the type and then with math.isnan since it doesn't work for other types:

import math

x = [('Recording start', 0), (float('nan'), 4), (float('nan'), 7), ('Event marker 1', 150)]
res = [t for t in x if not any(isinstance(n, float) and math.isnan(n) for n in t)]
print(res)

Output:

[('Recording start', 0), ('Event marker 1', 150)]