Python File Operations

Python provides open()  to open a file and open() returns a built-in type file object. The default mode is read.

fread = open("1.txt") is equivalent to fread = open("1.txt", "r"), where fread is where the file object returned by open() is stored.

Python provides read(), readline() and readlines() functions to read a file. read() reads entire file at once. readline() reads next line from the open file. readlines() returns a list where each element is a line of a file.

The file can also be open in write mode. Python provides write() to write a string in a file, writelines() to write a sequence of lines at once.

The built-in type file object has close() to which is called for all open files