Built-in Formatters¶
By default Flake8 has two formatters built-in, default
and pylint
.
These correspond to two classes Default
and Pylint
.
In Flake8 2.0, pep8 handled formatting of errors and also allowed users to
specify an arbitrary format string as a parameter to --format
. In order
to allow for this backwards compatibility, Flake8 3.0 made two choices:
- To not limit a user’s choices for
--format
to the format class names - To make the default formatter attempt to use the string provided by the user if it cannot find a formatter with that name.
Default Formatter¶
The Default
continues to use the same default format string as
pep8: '%(path)s:%(row)d:%(col)d: %(code)s %(text)s'
.
To provide the default functionality it overrides two methods:
after_init
format
The former allows us to inspect the value provided to --format
by the
user and alter our own format based on that value. The second simply uses
that format string to format the error.