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Python File write() Method with example

Hello dear readers! Welcome back to another edition of our tutorial on Python. In this tutorial guide, we are going to be discussing about Python File write() method.

The Python file write() method writes a string str to the file. This method has no return value. Due to buffering, the string may not actually show up until the flush() or close() method is called.


The following below is the syntax for Python File write() method -

fileObject.write( str )

Parameter Details

  • str - This is the string that is to be written in the file.

Return Value

It does not return any value.


The following below is a simple example -

This is 1st line
This is 2nd line
This is 3rd line
This is 4th line
This is 5th line


# Open a file in write mode
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

str = "This is 6th line"
# Write a line at the end of the file.
fo.seek(0, 2)
line = fo.write( str )

# Now read complete file from beginning.
for index in range(6):
   line = fo.next()
   print "Line No %d - %s" % (index, line)

# Close opend file

When the above code is executed, it 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

Alright guys! This is where we are rounding up for this tutorial post. In our next tutorial, we are going to be studying about the Python File writelines Method.

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