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PiperOrigin-RevId: 275739207

official/README.md

@@ -40,12 +40,28 @@ Please follow the below steps before running models in this repo:
     [nightly binaries](https://github.com/tensorflow/tensorflow#installation)
 
 2.  Add the top-level ***/models*** folder to the Python path with the command:
-    `export PYTHONPATH=$PYTHONPATH:/path/to/models`
 
-    Using Colab: `import os os.environ['PYTHONPATH'] += ":/path/to/models"`
+  ```shell
+  export PYTHONPATH=$PYTHONPATH:/path/to/models
+  ```
 
-3.  Install dependencies: `pip3 install --user -r official/requirements.txt` or
-    `pip install --user -r official/requirements.txt`
+  Using Colab:
+
+  ```python
+  import os os.environ['PYTHONPATH'] += ":/path/to/models"
+  ```
+
+3.  Install dependencies:
+
+  ```shell
+  pip3 install --user -r official/requirements.txt
+  ```
+
+  or (Python 2 compatibility is not guaranteed)
+
+  ```shell
+  pip install --user -r official/requirements.txt
+  ```
 
 To make Official Models easier to use, we are planning to create a pip
 installable Official Models package. This is being tracked in