4.4 Run flake8

Run flake8. The output of flake8 on sample.py shown below

C:\kpurma\PythonDevelopmentProcess>python -m flake8 sample.py
sample.py:1:1: D100 Missing docstring in public module
sample.py:30:1: F401 'os' imported but unused
sample.py:31:1: W293 blank line contains whitespace
sample.py:32:1: E302 expected 2 blank lines, found 1
sample.py:33:1: D400 First line should end with a period
sample.py:35:1: D107 Missing docstring in __init__
sample.py:36:13: E117 over-indented
sample.py:38:13: F841 local variable 'd' is assigned to but never used
sample.py:41:13: E117 over-indented
sample.py:43:21: E117 over-indented
sample.py:44:13: E722 do not use bare 'except'
sample.py:45:21: E117 over-indented
sample.py:48:1: E305 expected 2 blank lines after class or
                function definition, found 1

Fix flake8 issues and run falke8 again to check there is no errors reported.

Source code sample_fixed.py:

#Source code sample.fixed.py:

“””Sample file with flake8 errors fixed.”””

class AddTen:
    """Class for add ten to a given number."""

    def __init__(self, user_input: int = 0):
        “””Initialization.”””
        self.user_input = user_input
        self.new_varaible = 10

    def add_ten(self)->int:
        """Method to add ten to given number."""
        try:
            return self.new_varaible + self.user_input
        except Exception as e:
            raise e

Run flake on fixed code.

C:\kpurma\PythonDevelopmentProcess>python -m flake8 sample_fixed.py

C:\kpurma\PythonDevelopmentProcess>