Hi, i'm trying to pull the data using the DownloadReportAsStream method and 
there are issues downloading data where i'm seeing a malformed string (not 
all columns posted).
I'm kind of surprised as to why all data is not downloaded. 
Could you please let me know if there are any known issues with this 
approach? 

Here is my code snippet:

"id" used below is the accountId.

report_definition = {
    'dateRangeType': 'CUSTOM_DATE',
    'downloadFormat': 'CSV',
    'includeZeroImpressions': 'false',
    'reportName': 'Daily Adwords Digest',
    'reportType': 'AD_PERFORMANCE_REPORT',
    'selector': {
        'dateRange': {
            'min': start_dt,  # format is '20141117'
            'max': end_dt
        },
        'fields': REPORT_COLUMNS,
    }
}
CHUNK_SIZE = 32 * 1024

report_data = StringIO.StringIO()
stream_data = report_downloader.DownloadReportAsStream(
    report_definition, skip_report_header=True, skip_column_header=True,
    skip_report_summary=True, include_zero_impressions=False)

try:
    while True:
        chunk = stream_data.read(CHUNK_SIZE)
        if not chunk: break
        report_data.write(chunk.decode() if sys.version_info[0] == 3
                                            and getattr(report_data, 
'mode', 'w') == 'w' else chunk)
    #report_data.seek(0)
    #time.sleep(5)                    
    data = report_data.getvalue()                    
    #for line in report_data.split("\n"):
    for line in data.split("\n"):
        f.write("{},{}\n".format(id, line))
        cnt += 1
        
except Exception as e:
    logging.error("Failed to download data for AccountID %s" % id)
    raise e
finally:
    report_data.close()
    stream_data.close()

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