File I/O

Question 1

What does I/O stand for?

Answer 1

Input something from the outside world

Output something to the outside world

Question 2

One of the most common ways we us I/O is

Answer 2

to read / write files

example of using I/O: we develop a script to compress images

we need to INPUT IMAGE
and OUTPUT COMPRESSED IMAGE

Question 3

What is Open?

Answer 3

Python’s built-in function that allows us to open and write to files

example of what we can do:

open(‘name of file’)

you have to manually close the file after you are finished with the file

open has a default param, mode. It is set to ‘r’ for read. Can be changed to ‘w’ for write or ‘r+’

most common modes are:
read, write, and append

Question 4

File I/O errors

Answer 4

common pattern when working with File I/O is to put them in a Try Except block

try:
code
except FileNotFoundError:
code

or..

except IOError: