Help, my first time using streamlit

Using Streamlit
1

it my first time using streamlit library, after installing, i run a simple command “streamlit run pop.py” it gives me this error below

C:\Users\DELL>streamlit run pop.py
Traceback (most recent call last):
File “c:\users\dell\appdata\local\programs\python\python39\lib\runpy.py”, line 197, in _run_module_as_main
return _run_code(code, main_globals, None,
File “c:\users\dell\appdata\local\programs\python\python39\lib\runpy.py”, line 87, in run_code
exec(code, run_globals)
File "C:\Users\DELL\AppData\Local\Programs\Python\Python39\Scripts\streamlit.exe_main.py", line 4, in
ModuleNotFoundError: No module named ‘streamlit.cli’; ‘streamlit’ is not a package

please can someonle kindly help me out