Python Criar arquivo, se não existir
import os
if not os.path.exists(path):
with open(path, 'w'):
Doubtful Dingo
import os
if not os.path.exists(path):
with open(path, 'w'): import os
filename="file.txt"
answ=os.path.exists(filename)
with open(filename, "a" if answ else "w") as f:
if(answ):
f.write("\n")
f.write("hi!")