if-condition incorrectly executed

I have implemented the following if-condition in my program. Unfortunately the wrong statement is always executed.

I hope someone can help me.

Thanks. Janik

'''

a = math.hypot(schnittpunkt_0[0], schnittpunkt_0[1])
b = math.hypot(schnittpunkt_1[0], schnittpunkt_1[1])

if (a > b):
    x1_portal = schnittpunkte[0]
    y1_portal = schnittpunkte[1]
else:
    x1_portal = schnittpunkte[2]
    y1_portal = schnittpunkte[3]

'''

Debugger