Python program to read file word by word

Python is a great language for file handling, and it provides built-in functions to make reading files easy with which we can read file word by word.

Read file word by word

In this article, we will look at how to read a text file and split it into single words using Python. Here are a few examples of reading a file word by word in Python for a better understanding.

Example 1:

Let’s suppose the text file looks like this – Text File Code Explanation:

Open a file in read mode that contains a string then use a for loop to read each line from the text file again use for loop to read each word from the line split by ‘ ‘.Display each word from each line in the text file.

Python3

# Python program to read
# file word by word

# opening the text file
with open('GFG.txt','r') as file:

    # reading each line
    for line in file:

        # reading each word
        for word in line.split():

            # displaying the words
            print(word)

Output:

Geeks
4
geeks

Time Complexity: O(n), where n is the total number of words in the file.
Auxiliary Space: O(1), as the program is reading and displaying each word one by one without storing any additional data.

Example 2:

Let’s suppose the text file contains more than one line. Text file.Code Explanation: Open a file in read mode that contains a string then use a for loop to read each line from the text file again use for loop to read each word from the line split by ‘ ‘.Display each word from each line in the text file.

Python3

# Python program to read
# file word by word

# opening the text file
with open('GFG.txt','r') as file:

    # reading each line
    for line in file:

        # reading each word
        for word in line.split():

            # displaying the words
            print(word)

Output:

Geeks
4
Geeks
And
in
that
dream,
we
were
flying.

Time complexity: O(n), where n is the total number of words in the file.
Auxiliary space: O(1), as only a constant amount of extra space is used to store each word temporarily while printing it.

For more please read this article: Read and writing text file