Function _read_exact

Lib/gzip.py:473–486

Read exactly *n* bytes from `fp` This method is required because fp may be unbuffered, i.e. return short reads.

(fp, n)

        super().__del__()

def _read_exact(fp, n):
    '''Read exactly *n* bytes from `fp`

    This method is required because fp may be unbuffered,
    i.e. return short reads.
    '''
    data = fp.read(n)
    while len(data) < n:
        b = fp.read(n - len(data))
        if not b:
            raise EOFError("Compressed file ended before the "
                           "end-of-stream marker was reached")
        data += b
    return data


def _read_gzip_header(fp):