# Uploading packages to nexus3 using python script

**URL:** <https://community.sonatype.com/t/uploading-packages-to-nexus3-using-python-script/10227>\
**Category:** Sonatype Nexus Repository\
**Tags:** help\
**Created:** [March 1, 2023, 11:07am UTC](https://community.sonatype.com/t/uploading-packages-to-nexus3-using-python-script/10227 "2023-03-01T11:07:56Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![premsagar.kapikad-external](https://avatars.discourse-cdn.com/v4/letter/p/eada6e/32.png) [@premsagar.kapikad-external](https://community.sonatype.com/u/premsagar.kapikad-external)\
**Post date:** [March 1, 2023, 11:07am UTC](https://community.sonatype.com/t/uploading-packages-to-nexus3-using-python-script/10227/1 "2023-03-01T11:07:56Z")

</div>

I am using the following code to upload a sample file to nexus repository. I found this on one of the answers

```auto
import requests
from requests.auth import HTTPBasicAuth

url ='https://localhost:8081/nexus/service/rest/v1/components'

params = (
   ('repository', 'tools'),
)

payload = {
    'maven2.groupId': (None, 'com.example'),
    'maven2.artifactId': (None, 'test-app'),
    'maven2.version': (None, '1.0.4'),
    'maven2.asset1': ('example.json', open('example.json', 'rb')),
    'maven2.asset1.extension': (None, 'json'),
}
try:
    response = requests.post(url,
                             params=params,
                             files=payload
                             )
    response.raise_for_status()
except requests.exceptions.HTTPError as errh:
    print("Http Error:", errh)
    exit(1)
except requests.exceptions.ConnectionError as errc:
    print("Error Connecting:", errc)
    exit(1)
except requests.exceptions.Timeout as errt:
    print("Timeout Error:", errt)
    exit(1)
except requests.exceptions.RequestException as err:
    print("OOps: Something Else", err)
    exit(1)

```

I would like to know what is the speciality of `None` in the line `'maven2.groupId': (None, 'com.example')`

Please excuse me if this question does not fit here. But could you clarify