updated contents from Atlas repo

strings-bytes/strings-bytes-test.txt

@@ -0,0 +1,22 @@
+>>> s = 'naïve'  <1>
+>>> b = b'naïve'  <2>
+Traceback (most recent call last):
+  ...
+SyntaxError: bytes can only contain ASCII literal characters.
+>>> b = bytes('naïve', 'iso8859-1')  <3>
+>>> b         <4>
+b'na\xefve'
+>>> s         <5>
+'naïve'
+>>> b == s.encode('iso8859-1')  <6>
+True
+>>> s[2]      <7>
+'ï'
+>>> b[2]      <8>
+239
+>>> ord(s[2]) <9>
+239
+>>> s.upper() <10>
+'NAÏVE'
+>>> b.upper() <11>
+b'NA\xefVE'