Open Modes

You can also specify mode of operation in the open function with open(filename, operation).

There are four different modes for opening a file:

Note: if the file does not exists all the modes will create the file except the read mode

You can also specify if the file should be handled in binary or text mode:

Some examples:

• Open a file named data.csv in append mode open('data.csv', 'a')
• Open a file named foo.txt in write and binary mode open('foo.txt', 'wb')
• Open a file named bar.txt in read and write mode open('bar.txt', 'rw')

The default open mode is 'rt', so open('a.txt') is the same as open('a.txt', 'rt')