7. Whitespace Non-Errors

7.1. Proper use of Whitespace improves readability

Whitespace is properly used to improve readability of lists.
Whitespace (tabs, spaces, line endings) are ignored within a list, so a long list can be set out like that below,
with all the Images lined up for easy reading.

from microbit import *

shape_list = [
    Image.TRIANGLE,
    Image.TRIANGLE_LEFT,
    Image.DIAMOND,
    Image.DIAMOND_SMALL,
]
while True:
    display.show(shape_list, delay=100)

7.2. Whitespace before parentheses: No Error

display.scroll ("A", delay=200) has an unneeeded space before the parentheses.
When Check is pressed, it reports that there is Whitespace before the “(“.
Without fixing this, after flashing to the microbit, it works.
Press the tidy button to remove the extra whitespace.

from microbit import *

display.scroll ("A", delay=200)

../_images/whitespace_before_parentheses_error1.png

7.3. Whitespace around equals in an argument: no Error

delay =200 has a space before the equals sign.
Pressing check will indicate that the space should not be there.
This is not an error. It will still work in the microbit.
delay=200 is the preferred format.
Press the tidy button to remove the extra whitespace.

from microbit import *

while True:
    display.scroll("A", delay =200)

../_images/whitespace_before_equals_error.png

7.4. Whitespace before colon: no Error

while True  : has spaces before the colon.
Pressing check with not reveal an issue.
This is not an error. It will still work on the microbit.
while True: is the preferred format.
Press the tidy button to remove the extra whitespace.

from microbit import *

while True  :
    display.scroll("A", delay=200)

7.5. Whitespace after keyword: no Error

while  True: has extra spaces after the ‘while’.
Pressing check with not reveal an issue.
This is not an error. It will still work on the microbit.
while True: is the preferred format.
Press the tidy button to remove the extra whitespace.

from microbit import *

while  True:
    display.scroll("B", delay=200)

7.6. Whitespace missing arouns equals operator: no Error

total=2+5 lacks spaces around the ‘=’ operator.
Pressing check will indicate that the space should be added.
This is not an error. It will still work on the microbit.
total = 2+5 is the preferred format.
Press the tidy button to add the extra whitespace.

from microbit import *

total=2+5
display.scroll(total, delay=200)

../_images/whitespace_missing_around_equals.png