Revert "由于PySimpleGUI作者故意移除免费的旧版本，改用PySimpleGUI-4-foss"

backend/ppocr/postprocess/pse_postprocess/pse/__init__.py

@@ -0,0 +1,29 @@
+# copyright (c) 2020 PaddlePaddle Authors. All Rights Reserve.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+import sys
+import os
+import subprocess
+
+python_path = sys.executable
+
+ori_path = os.getcwd()
+os.chdir('ppocr/postprocess/pse_postprocess/pse')
+if subprocess.call(
+        '{} setup.py build_ext --inplace'.format(python_path), shell=True) != 0:
+    raise RuntimeError(
+        'Cannot compile pse: {}, if your system is windows, you need to install all the default components of `desktop development using C++` in visual studio 2019+'.
+        format(os.path.dirname(os.path.realpath(__file__))))
+os.chdir(ori_path)
+
+from .pse import pse