Handle floats when parsing pyproject.toml (#4518) (#4520)

* Handle floats when parsing pyproject.toml (#4518)

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Co-authored-by: Markus Siebenhaar <markus.siebenhaar@masiha.de>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

CONTRIBUTORS.txt

@@ -499,3 +499,5 @@ contributors:
 * Bernard Nauwelaerts: contributor
 
 * Fabian Damken: contributor
+
+* Markus Siebenhaar: contributor

ChangeLog

@@ -105,6 +105,10 @@ modules are added.
 
   Closes #585
 
+* Added handling of floating point values when parsing configuration from pyproject.toml
+
+  Closes #4518
+
 
 What's New in Pylint 2.8.2?
 ===========================

doc/whatsnew/2.9.rst

@@ -55,3 +55,5 @@ Other Changes
   like ``[]`` and ``[1, 2, 3]``.
 
 * ``ignore-paths`` configuration directive has been added. Defined regex patterns are matched against file path.
+
+* Added handling of floating point values when parsing configuration from pyproject.toml

pylint/config/option_manager_mixin.py

@@ -281,7 +281,7 @@ def read_config_file(self, config_file=None, verbose=None):
                         for option, value in values.items():
                             if isinstance(value, bool):
                                 values[option] = "yes" if value else "no"
-                            elif isinstance(value, int):
+                            elif isinstance(value, (int, float)):
                                 values[option] = str(value)
                             elif isinstance(value, list):
                                 values[option] = ",".join(value)