Bug 1858056 - Favor RawConfigParser.read_file instead of deprecated readfp r=saschanaz

readfp is deprecated since Python 3.2

Differential Revision: https://phabricator.services.mozilla.com/D190532

python/mach/mach/config.py

@@ -309,7 +309,7 @@ class ConfigSettings(collections.abc.Mapping):
         """Load config data by reading file objects."""
 
         for fp in fps:
-            self._config.readfp(fp)
+            self._config.read_file(fp)
 
     def write(self, fh):
         """Write the config to a file object."""

testing/web-platform/unittestrunner.py

@@ -49,7 +49,7 @@ class ReplaceRequirements(object):
         parser = configparser.ConfigParser()
         path = os.path.join(self.tox_path, "tox.ini")
         with open(path) as f:
-            parser.readfp(f)
+            parser.read_file(f)
         deps = parser.get("testenv", "deps")
         dep_re = re.compile("(?:.*:\s*)?-r(.*)")