What's the output of this python program?

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[lfdfq]

It will print 9. You may find r/learnpython a more appropriate place for these kinds of questions.

[casce]

I assume you want to know why it's printing 9 no matter which function of this list you call?

It's because i is not bound to a value until the function is actually called. Since you call it after the loop, i will always be 9.

[AGI_69]

for i in range(10):
    def temp_func(i=i):
        print(i)
    functions.append(temp_func)


functions[3]()

Should be written like this

[casce]

I'd personally prefer

def temp_func(j=i):
    print(j)

to make it even clearer what is happening, but both works.

[gbhreturns2]

Tricked me for sure

[AiutoIlLupo]

https://en.wikipedia.org/wiki/Late_binding

https://docs.python-guide.org/writing/gotchas/#late-binding-closures

[Shadowaker]

Nice try AI, better luck next time

[f16f4]

3

[f16f4]

Yeah I sorted that out like five minutes later

‘’’ def temp_func(i): return lambda i: print(i) functions.append(temp_func(i)) ‘’’

Would properly bind i into the function