Python File Mode 'w ': How Can You Read a File Opened in This Mode?

Confused by Python File Mode "w "

When opening a file in Python, there are various modes to specify how it should be handled. The "w " mode is one of the most commonly used, but it can also be confusing. Let's explore this mode in detail:

As stated in the documentation, "w " mode:

• Opens a file for both writing and reading
• Overwrites the existing file if it exists
• If the file does not exist, creates a new file for reading and writing

Now, let's address the question: how can you read a file opened with "w "?

Once a file is opened in "w " mode, it is essentially a text stream object. This means you can use the standard Python methods for reading and writing files. Here are some examples:

To read from a file opened with "w ":

with open("test.txt", "w+") as f:
    data = f.read()
    print(data)

The above code will read the contents of the file "test.txt" and print them on the console.

Note that opening a file in "r " or "r b" modes would preserve the existing content, while "w " mode truncates the file before opening it for writing and reading.

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