python3 module v:"module.classObj"

Question

I use python3.7 and i had see someone use code like this

import mitmproxy.log
import mitmproxy.master
import mitmproxy.options

log: "mitmproxy.log.Log"
master: "mitmproxy.master.Master"
options: "mitmproxy.options.Options"

is mean that log is an instance of mitmproxy.log.Log?
But i try terminal, error occured

In [8]: import http

In [9]: s:'http.server'

In [10]: s
---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
<ipython-input-10-ded5ba42480f> in <module>
----> 1 s

NameError: name 's' is not defined

`s:'http.server'` just defines a *type*, there's still no value. — jonrsharpe, Jul 02 '20 at 09:36
I'm not sure what you're trying to say, but `s: 'http.server'` is definitely a [type annotation](https://www.python.org/dev/peps/pep-0484/). — jonrsharpe, Jul 02 '20 at 09:51

score 0 · Answer 1 · answered Jul 02 '20 at 09:47

What you are describing here is called annotations. So in your case log is not a instance of mitmproxy.log.Log. See by yourself:

>>> log.__annotations__
'mitmproxy.log.Log'

If you want to create an instance of the class Class please use this syntax:

s = Class()

python3 module v:"module.classObj"

1 Answers1