I am trying to do logging from multi page app.
I have run the Home .py like this
python -m streamlit run Home_v1.py --logger.level=warning 2>‘app_log.log’
In the above page the logging is happening fine.
Here is the code in the Home.py
logger = get_logger(__name__)
logger.info('Home info ' + str(dt.datetime.now()))
logger.warning('Home warning ' + str(dt.datetime.now()))
logger.debug('Home debug ' + str(dt.datetime.now()))
Then i have a childpage.py where i have used the logging same code for testing
but when i click on the child page and it comes up logging does not seem to be happening from the child page. Any suggestions or advise appreciated.
Thanks
Sai
1 Like
Hi @Sai_SaiGraph! 
I haven’t tried your solution, but I once created a little script that allows me to log in to any page of a multipage app.
Here it is below:
import streamlit as st
# Hardcoded password
correct_password = "one"
def check_password():
"""Returns `True` if the user has the correct password."""
# Initialize 'password_correct' if it's not in the session state
if "password_correct" not in st.session_state:
st.session_state["password_correct"] = False
# If the password has already been entered correctly, don't ask again
if st.session_state.password_correct:
return True
# Initialize 'password' if it's not in the session state
if "password" not in st.session_state:
st.session_state["password"] = ""
def password_entered():
"""Checks whether a password entered by the user is correct."""
if st.session_state.password == correct_password:
st.session_state.password_correct = True
else:
st.session_state.password_correct = False
# Password not correct, show input + error.
st.text_input(
"Please authenticate to access the pages",
type="password",
on_change=password_entered,
key="password",
)
if st.session_state.password_correct:
return True
elif st.session_state.password:
st.error("😕 Password incorrect")
return False
Feel free to try it and leave me feedback! 
Best wishes,
Charly
Thanks Charlie for your response. But i am talking about logger logging not authentication log in… i think your script refers to authentication login… please correct me… Thank you again…
Sai
This worked for me:
import logging
logging.basicConfig(filename=‘app.log’, filemode=‘w’, format=‘%(name)s - %(levelname)s - %(message)s’)
logging.warning(‘This will get logged to a file’)
logging.debug(‘This is a debug message’)
logging.info(‘This is an info message’)
logging.warning(‘This is a warning message’)
logging.error(‘This is an error message’)
logging.critical(‘This is a critical message’)
1 Like
Oops, my mistake!
I’m not familiar with Logger, and I thought the problem was about authentication logging, not server logging.
Anyway, glad you were able to find a solution to your issue! 
Best,
Charly