% Operation

Question

I don't know why the out put is [], could anyone tells me? Thanks!
https://code.sololearn.com/cAl8Ac0qcMUI/?ref=app

Answer 1

https://docs.python.org/3/library/itertools.html#itertools.takewhile
In the implementation you can see 2 things....
- It’s a generator so
for i in takewhile(...):
print(i)
- The generator stops when a condition is false (the else: break part)

Use filter instead which is built in...
print(list(filter(lambda x: x % 2 == 0, nums)))

Answer 2

TurtleShell Thank you very much, I got it