Writing a list to a file with Python

Question

Is this the cleanest way to write a list to a file, since writelines() doesn\'t insert newline characters?

file.writelines([\"%s\\n\" % item  fo         


        

Answer 1

The simpler way is:

with open("outfile", "w") as outfile:
    outfile.write("\n".join(itemlist))

You could ensure that all items in item list are strings using a generator expression:

with open("outfile", "w") as outfile:
    outfile.write("\n".join(str(item) for item in itemlist))

Remember that all itemlist list need to be in memory, so, take care about the memory consumption.