write to file in python3

Question

I am a python beginner. I am writing to a file as:

 with open("Init", mode='w') as out:
 out.write(datName)
 out.write("\n")
 out.write("T\n")
 out.write(datGroup)
 out.write("\n")
 out.write(datLatx) 
 out.write(" ")

while this is working, it is looking bad (space and newline is separate write statement).

I read this page, but still no idea.

Is there a better way of doing this given out.write(datName"\n") is invalid?

Answer 1

Well, you could do

out.write(datName + "\n")

but it may be easier to just use print:

print(datName, file=out)

as print automatically appends a newline.

Answer 2

If you want the output of many print statements to be redirected to a file, you could use contextlib.redirect_stdout() in Python 3.4+, for older Python versions see this answer:

from contextlib import redirect_stdout
with open('init.txt', 'w') as file, redirect_stdout(file):
 print(datName)
 print("T")
 print(datGroup)
 print(datLatx, end=" ")

You could also combine the print statements:

with open('init.txt', 'w') as file:
 print("\n".join([datName, "T", datGroup, datLatx]),
 end=" ", file=file)