Open tempfile in mode 'w' to prevent TypeError

For printing compilation errors, a NamedTemporaryFile object is opened in the default mode ('w+b'), and strings are written to it. This is not an issue in Python 2, but in Python 3, strings cannot be implicitly converted to bytes so a TypeError occurs on line 2310 (previously 2309). This commit explicitly opens the NamedTemporaryFile in mode 'w'.

Open tempfile in mode 'w' to prevent TypeError
36184075 · Jayanth Koushik · GitHub · b3d19ce8 · 36184075
--- a/theano/gof/cmodule.py
+++ b/theano/gof/cmodule.py
@@ -2302,6 +2302,7 @@ class GCC_compiler(Compiler):
        if status:
            tf = tempfile.NamedTemporaryFile(
+                mode='w',
                prefix='theano_compilation_error_',
                delete=False
            )