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✏️ Editing: response.py Read Only

from __future__ import absolute_import
from ..packages.six.moves import http_client as httplib

from ..exceptions import HeaderParsingError

def is_fp_closed(obj):
    """
    Checks whether a given file-like object is closed.

:param obj:
        The file-like object to check.
    """

try:
        # Check `isclosed()` first, in case Python3 doesn't set `closed`.
        # GH Issue #928
        return obj.isclosed()
    except AttributeError:
        pass

try:
        # Check via the official file-like-object way.
        return obj.closed
    except AttributeError:
        pass

try:
        # Check if the object is a container for another file-like object that
        # gets released on exhaustion (e.g. HTTPResponse).
        return obj.fp is None
    except AttributeError:
        pass

raise ValueError("Unable to determine whether fp is closed.")

def assert_header_parsing(headers):
    """
    Asserts whether all headers have been successfully parsed.
    Extracts encountered errors from the result of parsing headers.

Only works on Python 3.

:param headers: Headers to verify.
    :type headers: `httplib.HTTPMessage`.

:raises urllib3.exceptions.HeaderParsingError:
        If parsing errors are found.
    """

# This will fail silently if we pass in the wrong kind of parameter.
    # To make debugging easier add an explicit check.
    if not isinstance(headers, httplib.HTTPMessage):
        raise TypeError('expected httplib.Message, got {0}.'.format(
            type(headers)))

defects = getattr(headers, 'defects', None)
    get_payload = getattr(headers, 'get_payload', None)

unparsed_data = None
    if get_payload:  # Platform-specific: Python 3.
        unparsed_data = get_payload()

if defects or unparsed_data:
        raise HeaderParsingError(defects=defects, unparsed_data=unparsed_data)

def is_response_to_head(response):
    """
    Checks whether the request of a response has been a HEAD-request.
    Handles the quirks of AppEngine.

:param conn:
    :type conn: :class:`httplib.HTTPResponse`
    """
    # FIXME: Can we do this somehow without accessing private httplib _method?
    method = response._method
    if isinstance(method, int):  # Platform-specific: Appengine
        return method == 3
    return method.upper() == 'HEAD'

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