Example 2: Append data from a new line
In the above example of file handling, it can be seen that the data is not appended from the new line. This can be done by writing the newline ‘\n’ character to the file.
Python3
# Python program to illustrate# append from new linefile1 = open("myfile.txt", "w")L = ["This is Delhi \n", "This is Paris \n", "This is London"]file1.writelines(L)file1.close()# Append-adds at last# append modefile1 = open("myfile.txt", "a")# writing newline characterfile1.write("\n")file1.write("Today")# without newline characterfile1.write("Tomorrow")file1 = open("myfile.txt", "r")print("Output of Readlines after appending")print(file1.read())print()file1.close() |
Output:
Output of Readlines after appending This is Delhi This is Paris This is London TodayTomorrow
Note: ‘\n’ is treated as a special character of two bytes.
Python append to a file
While reading or writing to a file, access mode governs the type of operations possible in the opened file. It refers to how the file will be used once it’s opened. These modes also define the location of the File Handle in the file. The definition of these access modes is as follows:
- Append Only (‘a’): Open the file for writing.
- Append and Read (‘a+’): Open the file for reading and writing.
When the file is opened in append mode in Python, the handle is positioned at the end of the file. The data being written will be inserted at the end, after the existing data.