Missing import warnings when importing fully-qualified modules

[Greg Ward]

Importing modules using fully-qualified paths appears to confuse pyflakes. Example #1:

'''
$ cat pyflakes-missed-unused-import.py
import somepackage.mod1
import somepackage.mod2

def do_something():
    somepackage.mod1.do_something()

$ pyflakes pyflakes-missed-unused-import.py
'''

Expected output: an "unused import" warning about somepackage.mod2.

Actual output: no errors or warnings.

Example #2:

'''
$ cat pyflakes-missed-missing-import.py
import somepackage.mod2

def do_something():
    somepackage.mod1.do_something()

$ pyflakes pyflakes-missed-missing-import.py
'''

Expected output: a "missing import" error about somepackage.mod1 *and* an "unused import" warning about somepackage.mod2.

Actual output: no errors or warnings.

[Phil Frost (bitglue)]

Indeed, this is an issue. Fixing it will require some substantial rework of Pyflakes' data model, because currently it doesn't know anything about attributes.