Writing to a File
Now that you know how to read files, let’s dive into writing files. As with reading files, file objects have multiple methods that are useful for writing to a file.
write() writes a string to the file, and
writelines() writes a sequence to the file. No line endings are appended to each sequence item. It’s up to you to add the appropriate line ending(s).
Here’s a quick example of using
with open('dog_breeds.txt', 'r') as reader: # Note: readlines doesn't trim the line endings dog_breeds = reader.readlines() with open('dog_breeds_reversed.txt', 'w') as writer: # Alternatively you could use # writer.writelines(reversed(dog_breeds)) # Write the dog breeds to the file in reversed order for breed in reversed(dog_breeds): writer.write(breed)
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