pyflakes.log

sample.py:6: undefined name 'h'
sample.py:9: undefined name 'z'

pylint.log

************* Module sample
E:  5, 8: Module 'sys' has no 'xxx' member (no-member)
E:  6, 4: Undefined variable 'h' (undefined-variable)
E:  7, 5: Too many positional arguments for function call (too-many-function-args)
E:  8, 5: No value for argument 'x' in function call (no-value-for-parameter)
E:  8, 5: No value for argument 'y' in function call (no-value-for-parameter)
E:  9,12: Too many positional arguments for function call (too-many-function-args)
E:  9,19: Undefined variable 'z' (undefined-variable)
E: 23, 9: Too many positional arguments for method call (too-many-function-args)
E: 24,16: No value for argument 'x' in method call (no-value-for-parameter)

sample.py

import sys


def f(x, y):
    sys.xxx()  # sys.xxx is not defined
    h()  # h is not defined
    g(1, 2, 3)  # too many arguments
    g()  # too few arguments
    return g(x, y, z)  # z is undefined variable


def g(x, y):
    return


class A(object):
    def foo(self, x):
        return x


def k():
    a = A()
    a.foo(1, 2)  # too many arguments
    return a.foo()  # too few arguments


def l(a):
    a.foo(1, 2)  # too many arguments
    a.foo()  # too few arguments(this is hard to detect)