test: Fix SyntaxWarnings on escapes in Python strings

This is the remaining batch of SyntaxWarning cleanups in the test/
directory, as flagged by Python 3.8 (now tested with 3.8.0b4).  Most of
these are escapes in strings that are not recognized as Python-language
escapes up front, due to the embedded nature of testing - tests write a
string to a file which is actually Python (code or sconscript) which is
later to be executed.

Also changed the timestamp-fallback test to eliminate an imp module
DeprecationWarning: since in all supported Python versions haslib
is stdlib, drop that skip check; the md5 skip check can be a simple
import now.

My test runs with 3.8 show no SyntaxWarnings after this.

Signed-off-by: Mats Wichmann <mats@linux.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/test/option-v.py b/test/option-v.py
index 4a67df0..ed8c4e5 100644
--- a/test/option-v.py
+++ b/test/option-v.py
@@ -35,7 +35,7 @@ test.write('SConstruct', "")
 # Standard copyright marker is mangled so it doesn't get replaced
 # by the packaging build.
 copyright_line = """\
-(_{2}COPYRIGHT__|Copyright \\(c\\) 2001[-\d, ]+ The SCons Foundation)
+(_{2}COPYRIGHT__|Copyright \\(c\\) 2001[-\\d, ]+ The SCons Foundation)
 """
 
 # Windows may or may not print a line for the script version
@@ -64,7 +64,7 @@ if not test.match_re(stdout, expect1) and not test.match_re(stdout, expect2):
     test.fail_test()
 
 test.pass_test()
- 
+
 
 # Local Variables:
 # tab-width:4