'module' 对象没有属性 'choice' - 尝试使用 random.choice

Question

Could someone please tell me what I may be doing wrong. I keep getting this message when I run my python code:

import random

foo = ['a', 'b', 'c', 'd', 'e']

random_item = random.choice(foo)

print random_item

Error

AttributeError: 'module' object has no attribute 'choice'

Answer 1

Shot in the dark: You probably named your script random.py . Do not name your script the same name as the module.

I say this because the random module indeed has a choice method, so the import is probably grabbing the wrong (read: undesired) module.

Answer 2

for me the problem is I use

random.choices 

in python 3.6 local dev but the server is python3.5 don't have this method...

Answer 3

Sounds like an import issue. Is there another module in the same directory named random ? If so (and if you're on python2, which is obvious from print random_item ) then it's importing that instead. Try not to shadow built-in names.

You can test this with the following code:

import random

print random.__file__

The actual random.py module from stdlib lives in path/to/python/lib/random.py . If yours is somewhere else, this will tell you where it is.

Answer 4

In short, Python's looking in the first file it finds named "random", and isn't finding the choice attribute.

99.99% of the time, that means you've got a file in the path/directory that's already named "random". If that's true, rename it and try again. It should work.

Answer 5

I also got this error by naming a method random like this:

import random

def random():

  foo = ['a', 'b', 'c', 'd', 'e']

  random_item = random.choice(foo)

  print random_item

random()

It's not your case (naming a file random.py ) but for others that search about this error and may make this mistake.

Answer 6

If you are using Python older than 3.6 version, than you have to use NumPy library to achieve weighted random numbers. With the help of choice() method, we can get the random samples of one dimensional array and return the random samples of numpy array.

from numpy.random import choice
  
sampleList = [100, 200, 300, 400, 500]
randomNumberList = choice(
  sampleList, 5, p=[0.05, 0.1, 0.15, 0.20, 0.5])
  
print(randomNumberList)

source: geeksforgeek