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OK! Time to work with some files!


Create a function called write_to_file(filename, text) that opens a file whose filename was passed as an argument and saves the separate words from the text argument, one word per line.

The usage of the write_to_file(filename, text) function should be as follows:

  1. We provide the name of the file that will be created, e.g., my_filename.txt.
  2. We provide the string of words as a second argument, e.g., "I like cats".
  3. The function creates a filename called my_filename.txt. The contents of the file would be:

Remember that normal iterations on strings iterate over characters, not words.

The .split() function can be used to split text into words. By default, it splits on every whitespace character:

sentence = "I learn something new everyday"
word_list = sentence.split()
>> ['I', 'learn', 'something', 'new', 'everyday']

Stuck? Here's a hint!

To write to a file you need to open the file in the write ('w') mode and use the write() function:

with open(filename, 'w') as f:
  f.write("Hello world")

Remember to add '\n' to every word when saving a word to the file.

Make sure you don't remove the last line in the Code Editor:

write_to_file('new_file.txt', 'I love Python')

Don't write anything else to the file. Remember – you can always check what you've written to the file. At the end of the whole code you can type:

with open('new_file.txt', 'r') as f:

The result should be: