Python: Comment Matters

a.py

# tab-width: 4
import sys

arr   = ["Segment", "Fault"]
space = " "
nl    = "\n"

for i in range(5):
    for item in arr:
        sys.stdout.write(item)
	sys.stdout.write(space)
	sys.stdout.write(nl)

b.py

# tab-width: 8
import sys

arr   = ["Segment", "Fault"]
space = " "
nl    = "\n"

for i in range(5):
    for item in arr:
        sys.stdout.write(item)
	sys.stdout.write(space)
	sys.stdout.write(nl)

output.txt

[multiple1902@aurora /t/python] python a.py
Segment Fault 
Segment Fault 
Segment Fault 
Segment Fault 
Segment Fault 
[multiple1902@aurora /t/python] python b.py
Segment 
Fault 
Segment 
Fault 
Segment 
Fault 
Segment 
Fault 
Segment 
Fault