print statement is highlighted by pylint

Environment data

VS Code version: 1.19.3 Python Extension version: 2018.1 Python Version: 2.7, 3.5 OS and version: OS independent

Actual behavior

pylint marks print statement and print() function are marked as error on both python 2.7 and python 3.5. This behavior appeared just after module upgrade to 2018.1

Expected behavior

pylint shouldn’t mark error if using print() function on any python version and print statement on python 2.7

Steps to reproduce:

• create new .py file
• enter print("Hello, world!")
• save file

Logs

Output from Python output panel

[pylint]E1601:print statement used (1, 1)

Output from Console window (Help->Developer Tools menu)

console.ts:123 [Extension Host] Python Extension: Failed to get conda info from conda null
t.log @ console.ts:123
console.ts:123 [Extension Host] (node:16735) DeprecationWarning: os.tmpDir() is deprecated. Use os.tmpdir() instead.

[MikhailArkhipov]

This change is by design since many people don’t care about whitespace or styling. In many editors these kind of reports are off by default. There is a setting though:

pylintUseMinimalCheckers

You can set it to false and the arguments you mentioned won’t be passed to pylint.

[noonedeadpunk]

But it seems, that according to pylint, this message should be printed only if print is used as the statement, while it marks as an error while using print as a function.

Moreover, I couldn’t reproduce this with system pylint (which is installed on the same machine, as the affected VS Code):

dimar@SVTech-Workstation:~/Documents/Python$ /usr/bin/pylint --version
No config file found, using default configuration
pylint 1.5.2, 
astroid 1.4.4
Python 2.7.12 (default, Dec  4 2017, 14:50:18) 
[GCC 5.4.0 20160609]
dimar@SVTech-Workstation:~/Documents/Python$ /usr/bin/pylint test.py
No config file found, using default configuration
************* Module test
C:  1, 0: Unnecessary parens after 'print' keyword (superfluous-parens)
C:  1, 0: Missing module docstring (missing-docstring)


Report
======
1 statements analysed.

Statistics by type
------------------

+---------+-------+-----------+-----------+------------+---------+
|type     |number |old number |difference |%documented |%badname |
+=========+=======+===========+===========+============+=========+
|module   |1      |1          |=          |0.00        |0.00     |
+---------+-------+-----------+-----------+------------+---------+
|class    |0      |0          |=          |0           |0        |
+---------+-------+-----------+-----------+------------+---------+
|method   |0      |0          |=          |0           |0        |
+---------+-------+-----------+-----------+------------+---------+
|function |0      |0          |=          |0           |0        |
+---------+-------+-----------+-----------+------------+---------+



Raw metrics
-----------

+----------+-------+------+---------+-----------+
|type      |number |%     |previous |difference |
+==========+=======+======+=========+===========+
|code      |1      |50.00 |NC       |NC         |
+----------+-------+------+---------+-----------+
|docstring |0      |0.00  |NC       |NC         |
+----------+-------+------+---------+-----------+
|comment   |0      |0.00  |NC       |NC         |
+----------+-------+------+---------+-----------+
|empty     |1      |50.00 |NC       |NC         |
+----------+-------+------+---------+-----------+



Duplication
-----------

+-------------------------+------+---------+-----------+
|                         |now   |previous |difference |
+=========================+======+=========+===========+
|nb duplicated lines      |0     |NC       |NC         |
+-------------------------+------+---------+-----------+
|percent duplicated lines |0.000 |NC       |NC         |
+-------------------------+------+---------+-----------+



Messages by category
--------------------

+-----------+-------+---------+-----------+
|type       |number |previous |difference |
+===========+=======+=========+===========+
|convention |2      |0        |+2.00      |
+-----------+-------+---------+-----------+
|refactor   |0      |0        |=          |
+-----------+-------+---------+-----------+
|warning    |0      |0        |=          |
+-----------+-------+---------+-----------+
|error      |0      |1        |-1.00      |
+-----------+-------+---------+-----------+



Messages
--------

+-------------------+------------+
|message id         |occurrences |
+===================+============+
|superfluous-parens |1           |
+-------------------+------------+
|missing-docstring  |1           |
+-------------------+------------+



Global evaluation
-----------------
Your code has been rated at -10.00/10

dimar@SVTech-Workstation:~/Documents/Python$

And if I replace print() with a statement, only “Missing module docstring (missing-docstring)” notification will stay. So this is possible only if the module uses it’s own pylint, which is different version from the system one.

It seems, that it’s my fault about reporting problem for python3 - pylint just hadn’t re-read the file after changing Python version. So this problem is referenced only to python2.