› Forums › Variable Stars › Introducing MetroPSF – a program for ensemble photometry › installation error
9 April 2021 at 8:09 pm
#584066
![](https://britastro.org/wp-content/uploads/2017/02/picture-1605-1486673987-80x80.jpg)
Participant
Hi Maxim,
I downloaded the program, extracted it to a directory on my C: drive and installed Python
(I admit to not knowing anything about Python)
However, I’m unclear how to run “pip install -r requirements.txt”
Is that via the command prompt? It just gave an error ‘pip is not recognised…’
Regards,
Michael.