doc: improve docstring and remove unavailable links

Author: Chuyang Deng

src/sagemaker/pytorch/estimator.py

@@ -83,9 +83,8 @@ def __init__(
             py_version (str): Python version you want to use for executing your
                 model training code (default: 'py3'). One of 'py2' or 'py3'.
             framework_version (str): PyTorch version you want to use for
-                executing your model training code. List of supported versions
-                https://github.com/aws/sagemaker-python-sdk#pytorch-sagemaker-estimators.
-                If not specified, this will default to 0.4.
+                executing your model training code. If not specified, this will default
+                to 0.4.
             image_name (str): If specified, the estimator will use this image
                 for training and hosting, instead of selecting the appropriate
                 SageMaker official image based on framework_version and

src/sagemaker/s3.py

@@ -57,8 +57,9 @@ def upload(local_path, desired_s3_uri, kms_key=None, session=None):
         """Static method that uploads a given file or directory to S3.
 
         Args:
-            local_path (str): A local path to a file or directory.
-            desired_s3_uri (str): The desired S3 uri to upload to.
+            local_path (str): Path (absolute or relative) of local file or directory to upload.
+            desired_s3_uri (str): The desired S3 location to upload to. It is the prefix to
+                which the local filename will be added.
             kms_key (str): The KMS key to use to encrypt the files.
             session (sagemaker.session.Session): Session object which
                 manages interactions with Amazon SageMaker APIs and any other

src/sagemaker/tensorflow/estimator.py

@@ -237,9 +237,7 @@ def __init__(
             py_version (str): Python version you want to use for executing your model training
                 code (default: 'py2').
             framework_version (str): TensorFlow version you want to use for executing your model
-                training code. List of supported versions
-                https://github.com/aws/sagemaker-python-sdk#tensorflow-sagemaker-estimators.
-                If not specified, this will default to 1.11.
+                training code. If not specified, this will default to 1.11.
             model_dir (str): S3 location where the checkpoint data and models can be exported to
                 during training (default: None). It will be passed in the training script as one of
                 the command line arguments. If not specified, one is provided based on