vermin does not identify dict has_key is not available in py3

[chickenbit]

Given file with:

d = {"foo": "bar"}
if d.has_key("foo"):
    print("d has the key!")

behavior in Python 3.x

d = {}
d.has_key("foo")
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'dict' object has no attribute 'has_key'

vermin does not report a problem with py3 although you will get an error.

output snipit:

vermin.exe -t=3.6 -v C:\py2
Detecting python files..
Analyzing 2 files using 4 processes..
2.0, 3.0     C:\py2\dict_has_key.py

Reference:
https://portingguide.readthedocs.io/en/latest/dicts.html

[netromdk]

Thanks for reporting this, @chickenbit :)
I've added a rule for this so it supports both dict() and {}.

And you'll get the correct result using -t:

% ./vermin.py -q -t=3.6 examples/dict.py ; echo $?
Minimum required versions: 2.2
Incompatible versions:     3
Target versions not met:   3.6
1