#!/usr/bin/env python

# Filter output by pyflakes to control which warnings we check

def makekey(message):

    # "path/file:line: message"

    match = re.search(r"(line \d+)", message)

    line = ''

    if match:

        line = match.group(0)

        message = re.sub(r"(line \d+)", '', message)

    return re.sub(r"([^:]*):([^:]+):([^']*)('[^']*')(.*)$",

                  r'\3:\5:\4:\1:\2:' + line,

                  message)

lines = []

for line in sys.stdin:

    # We whitelist tests

    pats = [

            r"imported but unused",

            r"local variable '.*' is assigned to but never used",

            r"unable to detect undefined names",

           ]

    if not re.search('|'.join(pats), line):

        continue

    lines.append(line)

for line in sorted(lines, key = makekey):

    sys.stdout.write(line)

print