Should you always use with when printing to files in python -

from have seen, there 2 ways print file:

method 1

file = open('myfile.txt', 'a') file.write('sup')  # later on  file.write('yo')  # @ end  file.close() 

method 2

with open('myfile.txt', 'a') f:    f.write('sup')  # later on  open('myfile.txt', 'a') f:    f.write('yo') 

the problem first method, if program end abruptly, file not close , not saved. because of this, using , reopening file everytime want print it. however, realize may bad idea considering append file every 5 seconds. there major performance hit in reopening file "with" before printing every time? , if so, how should handle abrupt endings result in file not being closed using first method.

in first method, want flush changes file system after done set of writes. i.e.:

file.flush() 

for simple had in example, yes should use with open... interacting files.