Opening a File

To open a file in Python, you use the built-in open() function. This function takes two main parameters: the file path and the mode in which you want to open the file.

file = open('example.txt', 'r')

Modes for Opening a File

• 'r': Read mode (default). Opens a file for reading.
• 'w': Write mode. Opens a file for writing (and truncates the file to zero length).
• 'a': Append mode. Opens a file for writing, appending to the end of the file if it exists.
• 'b': Binary mode. Can be combined with other modes (e.g., 'rb' or 'wb' for reading or writing in binary).
• '+': Update mode. Can be combined with other modes (e.g., 'r+', 'w+', or 'a+' for reading and writing).