Streamlit - how do I get a link?

I'm starting to work with Streamlit in Python. I write

pip install --upgrade streamlit 

No error is issued, everything is downloaded. Today I downloaded another package via pip, there were no problems. Next, I write the simplest code

import streamlit as st
st.write('Hello, world!')

As far as I understand, I should have a link to the page where the phrase is displayed, but there is no link. What am I doing wrong? Writing to Jupiter, can the problem be related to it?

UPD: changed environment variables now writes

C:\Users\асер>pip install --upgrade streamlit
pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Collecting streamlit
  Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/streamlit/
  Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/streamlit/
  Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/streamlit/
  Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/streamlit/
  Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.")': /simple/streamlit/
  Could not fetch URL https://pypi.org/simple/streamlit/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/streamlit/ (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.")) - skipping
  Could not find a version that satisfies the requirement streamlit (from versions: )
No matching distribution found for streamlit
pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Could not fetch URL https://pypi.org/simple/pip/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/pip/ (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.")) - skipping 

Thank you