Python File writelines() Method
The method writelines() writes a sequence of strings to the file. The sequence can be any iterable object producing strings, typically a list of strings. There is no return value.
Following is the syntax for writelines() method
fileObject.writelines( sequence )
sequence -- This is the Sequence of the strings.
This method does not return any value.
The following example shows the usage of writelines() method.
#!/usr/bin/python # Open a file fo = open("foo.txt", "rw+") print "Name of the file: ", fo.name # Assuming file has following 5 lines # This is 1st line # This is 2nd line # This is 3rd line # This is 4th line # This is 5th line seq = ["This is 6th line\n", "This is 7th line"] # Write sequence of lines at the end of the file. fo.seek(0, 2) line = fo.writelines( seq ) # Now read complete file from beginning. fo.seek(0,0) for index in range(7): line = fo.next() print "Line No %d - %s" % (index, line) # Close opend file fo.close()
Let us compile and run the above program, this will produce the following result:
Name of the file: foo.txt Line No 0 - This is 1st line Line No 1 - This is 2nd line Line No 2 - This is 3rd line Line No 3 - This is 4th line Line No 4 - This is 5th line Line No 5 - This is 6th line Line No 6 - This is 7th line