Introduction to Python

Appending to a file

Recall the several modes that are supported for working with files:

Mode

Operation

Example

'r'

Read (the default one)

with open('document.txt', 'r') as f:

'w'

Write

with open('document.txt', 'w') as f:

'a'

Append

with open('document.txt', 'a') as f:

'r+'

Read + Write

with open('document.txt', 'r+') as f:

'x'

Create (error if present)

with open('document.txt', 'x') as f:

There are different files present on the computer. You are asked to add some lines to them.

The input contains 2 lines. The first line is the name of the file. The second one is the content we would like to add to that file.

The program needs to first add the specified line to the file and then print the whole content of the file.

Input

doc.txt (initial content)

Output

doc.txt (resulting content)

doc.txt
This is the second line

This is the first line

This is the first line
This is the second line

This is the first line
This is the second line

Input

empty.txt (initial content)

Output

empty.txt (resulting content)

empty.txt
Adding some content

Adding some content

Adding some content

Input

multiline.txt (initial content)

Output

multiline.txt (resulting content)

multiline.txt
The final line!

This is
some very
very long
document
with
many
lines of text…

This is
some very
very long
document
with
many
lines of text…
The final line!

This is
some very
very long
document
with
many
lines of text…
The final line!

Constraints

Time limit: 2 seconds

Memory limit: 512 MB

Output limit: 1 MB

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