To write to an existing file, you must add a parameter to the open() function: "a" - Append - will append to the end of the file "w" - Write - will overwrite any existing content
Open the file "demofile2.txt" and append content to the file:
f = open("demofile2.txt", "a") f.write("Now the file has more content!") f.close()
#open and read the file after the appending: f = open("demofile2.txt", "r") print(f.read())
Open the file "demofile3.txt" and overwrite the content:
f = open("demofile3.txt", "w") f.write("Woops! I have deleted the content!") f.close()
#open and read the file after the appending: f = open("demofile3.txt", "r") print(f.read())
Note: the "w" method will overwrite the entire file.
Create a New File
To create a new file in Python, use the open() method, with one of the following parameters: "x" - Create - will create a file, returns an error if the file exist "a" - Append - will create a file if the specified file does not exist "w" - Write - will create a file if the specified file does not exist