Replace KB unit with KiB (#4293)

kB (*kilo* byte) unit means 1000 bytes, whereas KiB ("kibibyte")
means 1024 bytes. KB was misused: replace kB or KB with KiB when
appropriate.

Same change for MB and GB which become MiB and GiB.

Change the output of Tools/iobench/iobench.py.

Round also the size of the documentation from 5.5 MB to 5 MiB.

1 files changed, 3 insertions, 3 deletions

diff --git a/Lib/test/test_largefile.py b/Lib/test/test_largefile.py
index 5b276e7..f409c5b 100644
--- a/Lib/test/test_largefile.py
+++ b/Lib/test/test_largefile.py
@@ -9,12 +9,12 @@ from test.support import TESTFN, requires, unlink
 import io  # C implementation of io
 import _pyio as pyio # Python implementation of io
 
-# size of file to create (>2GB; 2GB == 2147483648 bytes)
+# size of file to create (>2 GiB; 2 GiB == 2,147,483,648 bytes)
 size = 2500000000
 
 class LargeFileTest:
     """Test that each file function works as expected for large
-    (i.e. > 2GB) files.
+    (i.e. > 2 GiB) files.
     """
 
     def setUp(self):
@@ -142,7 +142,7 @@ def setUpModule():
         pass
 
     # On Windows and Mac OSX this test comsumes large resources; It
-    # takes a long time to build the >2GB file and takes >2GB of disk
+    # takes a long time to build the >2 GiB file and takes >2 GiB of disk
     # space therefore the resource must be enabled to run this test.
     # If not, nothing after this line stanza will be executed.
     if sys.platform[:3] == 'win' or sys.platform == 'darwin':