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Perseus Place RESTful API Client Python Library

Project description

Perseus RESTful API Client Python Library

Repository of classes that provide Pythonic interfaces to connect to a RESTful API server developed with Perseus RESTful API Framework.

Python Library Poster 0.8.1

Note: this library includes a modified version of poster 0.8.1, which original version provides a set of classes and functions to facilitate making HTTP POST (or PUT) requests using the standard multipart/form-data encoding.

The original library poster 0.8.1 cannot be used to upload file uploaded into memory (i.e., stream-to-memory), like for instance django InMemoryUploadedFile. The reason is that such file-like object doesn't support the method fileno() used by the poster 0.8.1 to determine the size of the file-like object to upload in Python module poster.encode:

if fileobj is not None and filesize is None:
    # Try and determine the file size
    try:
        self.filesize = os.fstat(fileobj.fileno()).st_size
    except (OSError, AttributeError):
        try:
            fileobj.seek(0, 2)
            self.filesize = fileobj.tell()
            fileobj.seek(0)
        except:
            raise ValueError("Could not determine filesize")

This code raises the exception io.UnsupportedOperation that poster 0.8.1 doesn't catch. Chris AtLee included Alon Hammerman's patch in the tag tip of the library ``poster, for catching theio.UnsupportedOperation for fileno` on 2013-03-12:

try:
    from io import UnsupportedOperation
except ImportError:
    UnsupportedOperation = None

(...)

if fileobj is not None and filesize is None:
    # Try and determine the file size
    try:
        self.filesize = os.fstat(fileobj.fileno()).st_size
    except (OSError, AttributeError, UnsupportedOperation):
        try:
            fileobj.seek(0, 2)
            self.filesize = fileobj.tell()
            fileobj.seek(0)
        except:
            raise ValueError("Could not determine filesize")

However, the latest version of poster installable with pip is still 0.8.1.

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