Issue2495: tokenize.untokenize did not insert space between two consecutive string literals:
"" "" => """", which is invalid code.
Will backport
diff --git a/Lib/tokenize.py b/Lib/tokenize.py
index 76ab430..0f68b40 100644
--- a/Lib/tokenize.py
+++ b/Lib/tokenize.py
@@ -210,12 +210,21 @@
tokval += ' '
if toknum in (NEWLINE, NL):
startline = True
+ prevstring = False
for tok in iterable:
toknum, tokval = tok[:2]
if toknum in (NAME, NUMBER):
tokval += ' '
+ # Insert a space between two consecutive strings
+ if toknum == STRING:
+ if prevstring:
+ tokval = ' ' + tokval
+ prevstring = True
+ else:
+ prevstring = False
+
if toknum == INDENT:
indents.append(tokval)
continue
@@ -244,7 +253,7 @@
t1 = [tok[:2] for tok in generate_tokens(f.readline)]
newcode = untokenize(t1)
readline = iter(newcode.splitlines(1)).next
- t2 = [tok[:2] for tokin generate_tokens(readline)]
+ t2 = [tok[:2] for tok in generate_tokens(readline)]
assert t1 == t2
"""
ut = Untokenizer()