Question 20Differentiate between "w" and "r" file modes used in Python while opening a data file. Illustrate the difference using suitable examples.

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"w" mode"r" modeIt is also called as write mode.It is also called as read mode.The "w" mode is used to open a file for writing.The "r" mode is used to open a file for reading.It creates a new file if the file does not exist.If the file does not exist, it raises a FileNotFoundError.If the file exists, Python will truncate existing data and over-write in the file.If the file exists, Python will open it for reading and allow to access its contents.Example:with open("example.txt", "w") as file:file.write("Hello, world!
")Example:with open("example.txt", "r") as file:data = file.read()print(data)

"w" mode	"r" mode
It is also called as write mode.	It is also called as read mode.
The "w" mode is used to open a file for writing.	The "r" mode is used to open a file for reading.
It creates a new file if the file does not exist.	If the file does not exist, it raises a FileNotFoundError.
If the file exists, Python will truncate existing data and over-write in the file.	If the file exists, Python will open it for reading and allow to access its contents.
Example: with open("example.txt", "w") as file: file.write("Hello, world!\n")	Example: with open("example.txt", "r") as file: data = file.read() print(data)

File Handling — Question 20

Question 20