Align MO pip requirements (openvinotoolkit#5171)

* Align MO pip requirements

* fix missing mxnet on platforms other than Windows or Linux

* remove spaces near environment markers

docs/MO_DG/prepare_model/Config_Model_Optimizer.md

@@ -122,10 +122,12 @@ virtualenv -p /usr/bin/python3.6 .env3 --system-site-packages
 virtualenv -p /usr/bin/python3.6 .env3/bin/activate
 ```
 3.  Install all dependencies or only the dependencies for a specific framework:
-    *   To install dependencies for all frameworks except TensorFlow* 2.x:
+    *   To install dependencies for all frameworks except TensorFlow* 1.x:
 ```shell
 pip3 install -r requirements.txt
 ```
+> **NOTE**: TensorFlow 1.x and 2.x are incompatible. Use separate virtual environments if you want to install multiple TensorFlow versions.
+
     *   To install dependencies only for Caffe:
 ```shell
 pip3 install -r requirements_caffe.txt

model-optimizer/requirements.txt

@@ -1,10 +1,10 @@
-tensorflow>=1.15.2,<2.0; python_version < "3.8"
-tensorflow>=2.2; python_version >= "3.8"
-mxnet>=1.0.0,<=1.7.0
-networkx>=1.11
-numpy>=1.14.0,<1.19.0
-protobuf>=3.6.1
-onnx>=1.1.2
-defusedxml>=0.5.0
-urllib3>=1.25.9
-requests>=2.20.0
+tensorflow~=2.4.1
+mxnet~=1.2.0; sys_platform == 'win32'
+mxnet~=1.7.0.post2; sys_platform != 'win32'
+networkx~=2.5
+numpy~=1.19.5
+protobuf>=3.15.6
+onnx>=1.8.1
+defusedxml>=0.7.1
+urllib3>=1.26.4
+requests>=2.25.1

model-optimizer/requirements_caffe.txt

@@ -1,5 +1,5 @@
-networkx>=1.11
-numpy>=1.14.0
-protobuf>=3.6.1
-defusedxml>=0.5.0
-requests>=2.20.0
+networkx~=2.5
+numpy~=1.19.5
+protobuf>=3.15.6
+defusedxml>=0.7.1
+requests>=2.25.1

model-optimizer/requirements_kaldi.txt

@@ -1,4 +1,4 @@
-networkx>=1.11
-numpy>=1.14.0
-defusedxml>=0.5.0
-requests>=2.20.0
+networkx~=2.5
+numpy~=1.19.5
+defusedxml>=0.7.1
+requests>=2.25.1

model-optimizer/requirements_mxnet.txt

@@ -1,6 +1,7 @@
-mxnet>=1.0.0,<=1.7.0
-networkx>=1.11
-numpy>=1.14.0
-defusedxml>=0.5.0
-urllib3>=1.25.9
-requests>=2.20.0
+mxnet~=1.2.0; sys_platform == 'win32'
+mxnet~=1.7.0.post2; sys_platform != 'win32'
+networkx~=2.5
+numpy~=1.19.5
+defusedxml>=0.7.1
+urllib3>=1.26.4
+requests>=2.25.1

model-optimizer/requirements_onnx.txt

@@ -1,5 +1,5 @@
-onnx>=1.1.2
-networkx>=1.11
-numpy>=1.14.0
-defusedxml>=0.5.0
-requests>=2.20.0
+onnx>=1.8.1
+networkx~=2.5
+numpy~=1.19.5
+defusedxml>=0.7.1
+requests>=2.25.1

model-optimizer/requirements_tf.txt

@@ -1,6 +1,6 @@
-tensorflow>=1.15.2,<2.0; python_version < "3.8"
-tensorflow>=2.2; python_version >= "3.8"
-networkx>=1.11
-numpy>=1.14.0,<1.19.0
-defusedxml>=0.5.0
-requests>=2.20.0
+# TensorFlow 1.x and 2.x are incompatible, use separate virtual environments for each version
+tensorflow~=1.15.5
+networkx~=2.5
+numpy~=1.18.5
+defusedxml>=0.7.1
+requests>=2.25.1

model-optimizer/requirements_tf2.txt

@@ -1,5 +1,5 @@
-tensorflow>=2.2
-networkx>=1.11
-numpy>=1.14.0
-defusedxml>=0.5.0
-requests>=2.20.0
+tensorflow~=2.4.1
+networkx~=2.5
+numpy~=1.19.5
+defusedxml>=0.7.1
+requests>=2.25.1