Practical Python: Learn Python Basics Step by Step- Python 3 - Read from a File

This tutorial covers reading text files in Python, focusing on using the 'with' keyword for efficient file handling. It explains how to read entire files or line by line, handle file paths, and manage file extensions. The tutorial also demonstrates how to process file content for use in Python programs, including converting text to numbers for computations.

What is a key point about creating a file without an extension?

• It can be created and read by Python without issues.

• It must have a specific extension to be valid.

• It is not recognized by any operating system.

• It cannot be read by Python.

What is the purpose of the 'with' keyword in file handling?

• To write data to a file.

• To read files faster.

• To automatically manage file opening and closing.

• To manually close the file after reading.

How can you read a file line by line in Python?

• Using the 'write' function.

• Using a while loop.

• Using the 'read' function.

• Using a for loop with the file object.

What does the 'rstrip' function do when reading lines from a file?

• Adds a newline character to each line.

• Removes trailing whitespace and newline characters.

• Splits the line into words.

• Converts the line to uppercase.

What is the difference between a relative and an absolute path?

• A relative path is based on the current directory location.

• A relative path is longer than an absolute path.

• An absolute path is dependent on the current directory.

• An absolute path cannot be used in Python.

How should backslashes be handled in Windows file paths?

• They should be removed.

• They should be doubled to avoid special character issues.

• They should be replaced with forward slashes.

• They should be ignored.

What is a common use of reading file content into a list?

• To delete the file content.

• To perform computations on the data.

• To display the file content as a string.

• To write the data back to the file.