fix: CLI crash on Windows and Python < 3.8 when the schema path conta…

…ins characters unrepresentable at the OS level.

docs/changelog.rst

@@ -6,6 +6,11 @@ Changelog
 `Unreleased`_
 -------------
 
+Fixed
+~~~~~
+
+- CLI crash on Windows and Python < 3.8 when the schema path contains characters unrepresentable at the OS level. `#400`_
+
 `0.24.0`_ - 2020-02-07
 ----------------------
 
@@ -678,6 +683,7 @@ Fixed
 .. _0.3.0: https://github.com/kiwicom/schemathesis/compare/v0.2.0...v0.3.0
 .. _0.2.0: https://github.com/kiwicom/schemathesis/compare/v0.1.0...v0.2.0
 
+.. _#400: https://github.com/kiwicom/schemathesis/issues/400
 .. _#394: https://github.com/kiwicom/schemathesis/issues/394
 .. _#391: https://github.com/kiwicom/schemathesis/issues/391
 .. _#386: https://github.com/kiwicom/schemathesis/issues/386

src/schemathesis/cli/__init__.py

@@ -1,4 +1,4 @@
-import pathlib
+import os
 import traceback
 from contextlib import contextmanager
 from enum import Enum
@@ -193,7 +193,7 @@ def run(  # pylint: disable=too-many-arguments
 
     with abort_on_network_errors():
         options.update({"checks": selected_checks, "workers_num": workers_num})
-        if pathlib.Path(schema).is_file():
+        if os.path.isfile(schema):
             options["loader"] = from_path
         elif app is not None and not urlparse(schema).netloc:
             # If `schema` is not an existing filesystem path or an URL then it is considered as an endpoint with