The open Function:Before you can read or write a file, you have to open it using Python's built-in open() function.
file object = open(file_name [, access_mode][, buffering])
1. file_name:Name of file
2. access_mode: The access_mode determines the mode in which the file has to be opened ie. read, write append etc. to see all access mode click here
3. buffering:Table shown below
|no buffering will take place|
|line buffering will be performed while accessing a file|
|then buffering action will be performed with the indicated buffer size|
|the buffer size is the system default|
# open file fo = open("foo.txt", "wb") print "Name of the file: ", fo.nameThis would produce following result:
Name of the file: foo.txt
The close Function:Close() method closes the file object Python automatically closes a file when the reference object of a file is reassigned to another file. It is a good practice to use the close() method to close a file.
# open file fo = open("aks.txt") print "Name of the file: ", fo.name # Close opend file fo.close()
# open file fo=open("aks.txt",'w') print (fo.name) # Close opend file fo.close()