python function call by using tuple

Question

I am writing code utilizing tuple for function call

def get_apple():
    print('you got an apple.')

def get_pear():
    print('you got a pear.')

fruits = (get_apple, get_pear)

print('0. apple\n1. pear')
s = eval(input('which one : '))

fruits[s]()

But once I execute this script, it only returns "TypeError: 'function' object is not subscriptable" on "fruitss".

Does anyone have an idea ?

Not reproducible. Please provide a minimal reproducible example. Also you should avoid eval at all cost because it's unsafe. Just use int(input('which one : ')). For example try type exit() when prompted for input. — r.ook
– r.ook, Commented Feb 26, 2019 at 14:24
This code works, your error would trigger on get_apple[s], but that ain't the case — zipa
– zipa, Commented Feb 26, 2019 at 14:24
Why are you using eval? Get rid of it; you know you want s to be an int, so use int(input(...)) instead. — chepner
– chepner, Commented Feb 26, 2019 at 14:25

hiro protagonist · Accepted Answer · 2019-02-26 14:23:40Z

2

you could just do this:

def get_apple():
    print('you got an apple.')

def get_pear():
    print('you got a pear.')

fruits = (get_apple, get_pear)

n = int(input('0. apple\n1. pear'))

fruits[n]()

there is no need for eval.

you'd have to check for non-integer input of course.

answered Feb 26, 2019 at 14:23

hiro protagonist

47.4k17 gold badges93 silver badges119 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

Daniel Weber · Accepted Answer · 2019-02-26 16:04:44Z

0

def get_apple():
    print('you got an apple.')

def get_pear():
    print('you got a pear.')

fruits = (get_apple, get_pear)

print('0. apple\n1. pear')
s = eval(str(input('which one : ')))

fruits[s]()

This code worked in both python 2.7.5 and python 3.7.1.

eval() takes input string as input . Hence converting input to str.

edited Feb 26, 2019 at 16:04

Daniel Weber

465 bronze badges

answered Feb 26, 2019 at 14:37

Genie

1291 gold badge2 silver badges9 bronze badges

Collectives™ on Stack Overflow

python function call by using tuple

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related