fix: Remove typing (#49)

* remove imports of typing package

* remove typing package from setup.py required_packages

* fix flake8 violations

Author: ajaykarpur

setup.py

@@ -29,7 +29,7 @@ def read_version():
 
 packages = setuptools.find_packages(where="src", exclude=("test",))
 
-required_packages = ["numpy", "six", "typing", "psutil", "retrying==1.3.3"]
+required_packages = ["numpy", "six", "psutil", "retrying==1.3.3"]
 
 # enum is introduced in Python 3.4. Installing enum back port
 if sys.version_info < (3, 4):

src/sagemaker_inference/decoder.py

@@ -15,7 +15,6 @@
 from __future__ import absolute_import
 
 import json
-from typing import Iterable  # noqa ignore=F401 imported but unused
 
 import numpy as np
 from six import BytesIO, StringIO
@@ -79,7 +78,6 @@ def _npy_to_numpy(npy_array):  # type: (object) -> np.array
 
 
 def decode(obj, content_type):
-    # type: (np.array or Iterable or int or float, str) -> np.array
     """Decode an object to one of the default content types to a numpy array.
 
     Args:

src/sagemaker_inference/encoder.py

@@ -15,15 +15,14 @@
 from __future__ import absolute_import
 
 import json
-from typing import Iterable  # noqa ignore=F401 imported but unused
 
 import numpy as np
 from six import BytesIO, StringIO
 
 from sagemaker_inference import content_types, errors
 
 
-def _array_to_json(array_like):  # type: (np.array or Iterable or int or float) -> str
+def _array_to_json(array_like):
     """Convert an array-like object to JSON.
 
     To understand better what an array-like object is see:
@@ -45,7 +44,7 @@ def default(_array_like):
     return json.dumps(array_like, default=default)
 
 
-def _array_to_npy(array_like):  # type: (np.array or Iterable or int or float) -> object
+def _array_to_npy(array_like):
     """Convert an array-like object to the NPY format.
 
     To understand better what an array-like object is see:
@@ -63,7 +62,7 @@ def _array_to_npy(array_like):  # type: (np.array or Iterable or int or float) -
     return buffer.getvalue()
 
 
-def _array_to_csv(array_like):  # type: (np.array or Iterable or int or float) -> str
+def _array_to_csv(array_like):
     """Convert an array-like object to CSV.
 
     To understand better what an array-like object is see:
@@ -89,7 +88,6 @@ def _array_to_csv(array_like):  # type: (np.array or Iterable or int or float) -
 
 
 def encode(array_like, content_type):
-    # type: (np.array or Iterable or int or float, str) -> np.array
     """Encode an array-like object in a specific content_type to a numpy array.
 
     To understand better what an array-like object is see: