Most efficient way to Write huge data to a file with python

Question

Lets say i have a huge list that have 10000000 item on it and i want to write every item on each line on a file i know i can do it like this
F= open("myfile.txt","w")
For i in my list :
F.write("".join(i)+"/n")
F.close
But that mean i call f.write()10000000 times and that take some time i want to a methode to write all data at once
Thank you
I have found answer in stackoverflow but i didnt understand

Answer 1

Why to call write() method millions times? That's what making it slower.
Rather store your data in a Python data structure ( choose wisely according to your data) and use write() method once to write the entire data to the file. It'll make it faster and efficient.

Answer 2

Yeah that what i want to do but how to store my data in python data structure ?? Give an example pls, my data are on a list like this
mylist = ["my","list"]
or a tuple