Issue writing point when providing historical times?

I have a csv file that contains historical measurements that I am trying to write to InfluxDB.

I have converted the timestamps to that which InfluxDB seems to like if I enter things manually.

Example data from CSV:

1490252400000000000,62
1490338800000000000,23

Timestamp and measurement, pretty simple.

I can manually insert things as such:

> insert portcount ports=62 1490252400000000000
> select * from portcount
name: portcount
time                ports
----                -----
1490252400000000000 62

My python script simple runs through each line of the csv and extracts what is needed and then should write the points to the database.

Example:

import influxdb
from influxdb import client as influxdb    
portcount = {}
with open(r'portcountlog.csv', 'r') as h:
    for line in h:
        log = line.strip('\n').split(',')
        loglist = []
        logentry = {}
        logentry['measurement'] = "portcount"
        logentry['time'] = log[0]
        logentry['fields'] = {}
        logentry['fields']['ports'] = log[1]
        loglist.append(logentry)
        print (loglist)
        db.write_points(loglist)

When I try running it I can see the data is correct for the line but it seems as though something in the client is trying generate its own timestamp or something?

[user@itnetops scripts]$ python oldportcounts.py
[{'fields': {'ports': '2\r'}, 'time': '1489647600000000000', 'measurement': 'portcount'}]
Traceback (most recent call last):
  File "oldportcounts.py", line 26, in <module>
    db.write_points(loglist)
  File "/usr/lib/python2.7/site-packages/influxdb/client.py", line 456, in write_points
    tags=tags, protocol=protocol)
  File "/usr/lib/python2.7/site-packages/influxdb/client.py", line 506, in _write_points
    protocol=protocol
  File "/usr/lib/python2.7/site-packages/influxdb/client.py", line 292, in write
    data = make_lines(data, precision).encode('utf-8')
  File "/usr/lib/python2.7/site-packages/influxdb/line_protocol.py", line 160, in make_lines
    _convert_timestamp(point['time'], precision)
  File "/usr/lib/python2.7/site-packages/influxdb/line_protocol.py", line 22, in _convert_timestamp
    timestamp = parse(timestamp)
  File "/usr/lib/python2.7/site-packages/dateutil/parser.py", line 1168, in parse
    return DEFAULTPARSER.parse(timestr, **kwargs)
  File "/usr/lib/python2.7/site-packages/dateutil/parser.py", line 578, in parse
    if cday > monthrange(cyear, cmonth)[1]:
  File "/usr/lib64/python2.7/calendar.py", line 121, in monthrange
    day1 = weekday(year, month, 1)
  File "/usr/lib64/python2.7/calendar.py", line 113, in weekday
    return datetime.date(year, month, day).weekday()
OverflowError: signed integer is greater than maximum

Is it trying to convert the timestamp I provided? It shouldn’t have to convert since it is in the format that InfluxDB uses? Any suggestions or advice on getting this to work?