tilemaker input.pbf --output=tiles/

mkdir py
touch py/__init__.py
protoc --proto_path=include --python_out=./py ./include/osmformat.proto
protoc --proto_path=include --python_out=./py ./include/vector_tile.proto

import sys
import py.vector_tile_pb2

with open(sys.argv[1]) as fp:
    pbf_file_contents = fp.read()

tile = py.vector_tile_pb2.Tile()
tile.ParseFromString(pbf_file_contents)

$ python pyread.py ./tiles/13/3932/2588.pbf
Traceback (most recent call last):
  File "pyread.py", line 8, in <module>
    tile.ParseFromString(pbf_file_contents)
  File "/home/rory/.local/lib/python2.7/site-packages/google/protobuf/message.py", line 186, in ParseFromString
    self.MergeFromString(serialized)
  File "/home/rory/.local/lib/python2.7/site-packages/google/protobuf/internal/python_message.py", line 841, in MergeFromString
    if self._InternalParse(serialized, 0, length) != length:
  File "/home/rory/.local/lib/python2.7/site-packages/google/protobuf/internal/python_message.py", line 866, in InternalParse
    new_pos = local_SkipField(buffer, new_pos, end, tag_bytes)
  File "/home/rory/.local/lib/python2.7/site-packages/google/protobuf/internal/decoder.py", line 827, in SkipField
    return WIRETYPE_TO_SKIPPER[wire_type](buffer, pos, end)
  File "/home/rory/.local/lib/python2.7/site-packages/google/protobuf/internal/decoder.py", line 797, in _RaiseInvalidWireType
    raise _DecodeError('Tag had invalid wire type.')
google.protobuf.message.DecodeError: Tag had invalid wire type.