Emit python3 prints and exception catching.#55
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kanaka wants to merge 5 commits into
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This is necessary to support incompatible syntax between python2 and python3 ASTs. In addition to general utf-8/bytes/string handling, the two biggest changes are that arguments are handled different in python3 and integers, floats, and strings are all treated as Constant rather than having their own class. A less significant change is that Try is now a single class rather than two different classes for the TryExcept and TryFinally cases. A couple of differences that are fixed yet (expression test cases for them are commented out in this commit): - negative numbers in an expression are encoded as a positive number within a '-' unary operation. - explicit unicode strings (starting with a u...) are not yet handled. Also, remove the testCoding test case file since all python3 files are UTF-8 now.
Add visit_Starred and remove specific visit_Call Starred handling since this is covered by the new visit_Starred. Enables parsing of "[*a]" case.
Use the stdout.buffer for writing to so that the behavior of write is to always take bytes. Also switch the tester to use BytesIO for the temporary write buffer for comparing.
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This isn't universal python3 support, but it was enough to support the python3 code I was wanting to minify.