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Install erpnext with python 3

Plz help me to install erpnext with python 3…

Do you have it installed already? If so what is the operating environment? Or if you have not installed it, do you have a platform in mind?

I have already installed but i want to install another with python 3 in a fresh server

If python3 is installed on the OS on the new server , install Erpnext as you have before then on the command line change into frappe-bench folder and use the command: bench migrate-env python3 .

https://frappe.io/docs/user/en/bench/resources/bench-commands-cheatsheet

i have followed this https://speedysense.com/install-erpnext-on-ubuntu-18-04-server/
to install erpnext, can u please tell which line i need to change for install erpnext with python 3?

Issue the bench migrate-env as above once you confirm that the installation is successful.