Remove None from param types and add (Optional).

This runs a script to remove None from the types for parameters, and
added (Optional) to the description. Does not pass lint due to some
too-long lines. I will clean those up manually.

See:
googleapis/google-cloud-python#2580 (review)

Author: tswast

google/cloud/_helpers.py

@@ -366,8 +366,8 @@ def _microseconds_from_datetime(value):
 def _millis_from_datetime(value):
     """Convert non-none datetime to timestamp, assuming UTC.
 
-    :type value: :class:`datetime.datetime`, or None
-    :param value: the timestamp
+    :type value: :class:`datetime.datetime`
+    :param value: (Optional) the timestamp
 
     :rtype: int, or ``NoneType``
     :returns: the timestamp, in milliseconds, or None
@@ -554,8 +554,8 @@ def _name_from_project_path(path, project, template):
     :type path: str
     :param path: URI path containing the name.
 
-    :type project: str or NoneType
-    :param project: The project associated with the request. It is
+    :type project: str
+    :param project: (Optional) The project associated with the request. It is
                     included for validation purposes.  If passed as None,
                     disables validation.
 

google/cloud/connection.py

@@ -214,8 +214,8 @@ def _make_request(self, method, url, data=None, content_type=None,
         :type headers: dict
         :param headers: A dictionary of HTTP headers to send with the request.
 
-        :type target_object: object or :class:`NoneType`
-        :param target_object: Argument to be used by library callers.
+        :type target_object: object
+        :param target_object: (Optional) Argument to be used by library callers.
                               This can allow custom behavior, for example, to
                               defer an HTTP request and complete initialization
                               of the object at a later time.
@@ -261,8 +261,8 @@ def _do_request(self, method, url, headers, data,
         :type data: str
         :param data: The data to send as the body of the request.
 
-        :type target_object: object or :class:`NoneType`
-        :param target_object: Unused ``target_object`` here but may be used
+        :type target_object: object
+        :param target_object: (Optional) Unused ``target_object`` here but may be used
                               by a superclass.
 
         :rtype: tuple of ``response`` (a dictionary of sorts)
@@ -323,8 +323,8 @@ def api_request(self, method, path, query_params=None,
                             response as JSON and raise an exception if
                             that cannot be done.  Default is True.
 
-        :type _target_object: :class:`object` or :class:`NoneType`
-        :param _target_object: Protected argument to be used by library
+        :type _target_object: :class:`object`
+        :param _target_object: (Optional) Protected argument to be used by library
                                callers. This can allow custom behavior, for
                                example, to defer an HTTP request and complete
                                initialization of the object at a later time.

google/cloud/streaming/buffered_stream.py

@@ -81,8 +81,8 @@ def _bytes_remaining(self):
     def read(self, size=None):
         """Read bytes from the buffer.
 
-        :type size: int or None
-        :param size: How many bytes to read (defaults to all remaining bytes).
+        :type size: int
+        :param size: (Optional) How many bytes to read (defaults to all remaining bytes).
 
         :rtype: str
         :returns: The data read from the stream.

google/cloud/streaming/http_wrapper.py

@@ -80,8 +80,8 @@ def _httplib2_debug_level(http_request, level, http=None):
     :type level: int
     :param level: the debuglevel for logging.
 
-    :type http: :class:`httplib2.Http`, or ``None``
-    :param http: the instance on whose connections to set the debuglevel.
+    :type http: :class:`httplib2.Http`
+    :param http: (Optional) the instance on whose connections to set the debuglevel.
     """
     if http_request.loggable_body is None:
         yield
@@ -115,8 +115,8 @@ class Request(object):
     :type http_method: str
     :param http_method: the HTTP method to use for the request
 
-    :type headers: mapping or None
-    :param headers: headers to be sent with the request
+    :type headers: mapping
+    :param headers: (Optional) headers to be sent with the request
 
     :type body: str
     :param body: body to be sent with the request

google/cloud/streaming/stream_slice.py

@@ -65,8 +65,8 @@ def read(self, size=None):
         slice indicates we should still be able to read more bytes, we
         raise :exc:`IncompleteRead`.
 
-        :type size: int or None
-        :param size: If provided, read no more than size bytes from the stream.
+        :type size: int
+        :param size: (Optional) If provided, read no more than size bytes from the stream.
 
         :rtype: bytes
         :returns: bytes read from this slice.

google/cloud/streaming/transfer.py

@@ -280,8 +280,8 @@ def from_stream(cls, stream, auto_transfer=True, total_size=None, **kwds):
         :type stream: writable file-like object
         :param stream: the target file
 
-        :type total_size: int or None
-        :param total_size: total size of the file to be downloaded
+        :type total_size: int
+        :param total_size: (Optional) total size of the file to be downloaded
 
         :type auto_transfer: bool
         :param auto_transfer: should the transfer be started immediately
@@ -457,8 +457,8 @@ def _compute_end_byte(self, start, end=None, use_chunks=True):
         :type start: int
         :param start: start byte of the range.
 
-        :type end: int or None
-        :param end: suggested last byte of the range.
+        :type end: int
+        :param end: (Optional) suggested last byte of the range.
 
         :type use_chunks: bool
         :param use_chunks: If False, ignore :attr:`chunksize`.
@@ -493,8 +493,8 @@ def _get_chunk(self, start, end):
         :type start: int
         :param start: start byte of the range.
 
-        :type end: int or None
-        :param end: end byte of the range.
+        :type end: int
+        :param end: (Optional) end byte of the range.
 
         :rtype: :class:`google.cloud.streaming.http_wrapper.Response`
         :returns: response from the chunk request.
@@ -555,8 +555,8 @@ def get_range(self, start, end=None, use_chunks=True):
         :type start: int
         :param start: Where to start fetching bytes. (See above.)
 
-        :type end: int or ``None``
-        :param end: Where to stop fetching bytes. (See above.)
+        :type end: int
+        :param end: (Optional) Where to stop fetching bytes. (See above.)
 
         :type use_chunks: bool
         :param use_chunks: If False, ignore :attr:`chunksize`
@@ -625,8 +625,8 @@ class Upload(_Transfer):
     :type mime_type: str:
     :param mime_type: MIME type of the upload.
 
-    :type total_size: int or None
-    :param total_size: Total upload size for the stream.
+    :type total_size: int
+    :param total_size: (Optional) Total upload size for the stream.
 
     :type http: :class:`httplib2.Http` (or workalike)
     :param http: Http instance used to perform requests.
@@ -669,8 +669,8 @@ def from_file(cls, filename, mime_type=None, auto_transfer=True, **kwds):
         :type mime_type: str
         :param mime_type:  MIMEtype of the file being uploaded
 
-        :type auto_transfer: bool or None
-        :param auto_transfer: should the transfer be started immediately
+        :type auto_transfer: bool
+        :param auto_transfer: (Optional) should the transfer be started immediately
 
         :type kwds: dict
         :param kwds:  keyword arguments:  passed
@@ -700,11 +700,11 @@ def from_stream(cls, stream, mime_type,
         :type mime_type: str
         :param mime_type:  MIMEtype of the file being uploaded
 
-        :type total_size: int or None
-        :param total_size:  Size of the file being uploaded
+        :type total_size: int
+        :param total_size: (Optional)  Size of the file being uploaded
 
-        :type auto_transfer: bool or None
-        :param auto_transfer: should the transfer be started immediately
+        :type auto_transfer: bool
+        :param auto_transfer: (Optional) should the transfer be started immediately
 
         :type kwds: dict
         :param kwds:  keyword arguments:  passed
@@ -784,8 +784,8 @@ def total_size(self):
     def total_size(self, value):
         """Update total size of the stream to be uploaded.
 
-        :type value: int or None
-        :param value: the size
+        :type value: int
+        :param value: (Optional) the size
         """
         self._ensure_uninitialized()
         self._total_size = value
@@ -1048,8 +1048,8 @@ def _validate_chunksize(self, chunksize=None):
 
         Helper for :meth:`stream_file`.
 
-        :type chunksize: int or None
-        :param chunksize: the chunk size to be tested.
+        :type chunksize: int
+        :param chunksize: (Optional) the chunk size to be tested.
 
         :raises: :exc:`ValueError` if ``chunksize`` is not a multiple
                  of the server-specified granulariy.