Python 3.6 Statistics module - NameError: name 'statistics' is not defined

Question

While learning to use "statistics module" in python 3.6 I am facing the following error: NameError: name 'statistics' is not defined I am just testing statistics basic functions which should return mean, median, mode, stdev, variance. I am new to Python and I can't find where the error is.

Code:

from statistics import *

example_list = [5,2,5,6,1,2,6,7,2,6,3,5,5]

x = statistics.mean(example_list)
print(x)

y = statistics.median(example_list)
print(y)

z = statistics.mode(example_list)
print(z)

a = statistics.stdev(example_list)
print(a)

b = statistics.variance(example_list)
print(b)

What am I doing wrong?

Answer 1

If I do this in IDLE, all works as expected.

>>> from statistics import *
>>> example_list = [5,2,5,6,1,2,6,7,2,6,3,5,5]
>>> x = mean(example_list)
>>> x
4.230769230769231

So I don't get the error you report at x = mean(example_list).

You haven't reported your stack trace (why not?) so it's not possible for me to tell, but I suspect you have named your test program statistics.py, and that is hiding the real statistics module.

Answer 2

"from" module "import" * brings in all the names defined in __all__ if that exists and all names except for those starting with an underscore if __all__ doesn't exist.

You don't need to qualify the names imported (that is, prefix them with statistics). Just used them directly, median, mode, stdev, variance.