Module params should default to str in most cases.

lib/ansible/module_utils/basic.py

@@ -226,7 +226,7 @@ def _convert(node):

FILE_COMMON_ARGUMENTS=dict(
    src = dict(),
    mode = dict(),
    mode = dict(type='raw'),
    owner = dict(),
    group = dict(),
    seuser = dict(),
@@ -574,6 +574,7 @@ def __init__(self, argument_spec, bypass_checks=False, no_log=False,
                'int': self._check_type_int,
                'float': self._check_type_float,
                'path': self._check_type_path,
                'raw': self._check_type_raw,
            }
        if not bypass_checks:
            self._check_required_arguments()
@@ -1360,15 +1361,23 @@ def _check_type_path(self, value):
        value = self._check_type_str(value)
        return os.path.expanduser(os.path.expandvars(value))

    def _check_type_raw(self, value):
        return value


    def _check_argument_types(self):
        ''' ensure all arguments have the requested type '''
        for (k, v) in self.argument_spec.items():
            wanted = v.get('type', None)
            if wanted is None:
                continue
            if k not in self.params:
                continue
            if wanted is None:
                # Mostly we want to default to str.
                # For values set to None explicitly, return None instead as
                # that allows a user to unset a parameter
                if self.params[k] is None:
                    continue
                wanted = 'str'

            value = self.params[k]