SL-15742: Convert build scripts to Python 3

This changeset makes it possible to build the Second Life viewer using
Python 3. It is designed to be used with an equivalent Autobuild branch
so that a developer can compile without needing Python 2 on their
machine.

Breaking change: Python 2 support ending

Rather than supporting two versions of Python, including one that was
discontinued at the beginning of the year, this branch focuses on
pouring future effort into Python 3 only. As a result, scripts do not
need to be backwards compatible. This means that build environments,
be they on personal computers and on build agents, need to have a
compatible interpreter.

Notes

- SLVersionChecker will still use Python 2 on macOS
- Fixed the message template url used by template_verifier.py

1 files changed, 1 insertions, 1 deletions

diff --git a/indra/newview/build_win32_appConfig.py b/indra/newview/build_win32_appConfig.py
index 9fdceee1be..d18d7b88cb 100755
--- a/indra/newview/build_win32_appConfig.py
+++ b/indra/newview/build_win32_appConfig.py
@@ -38,7 +38,7 @@ def munge_binding_redirect_version(src_manifest_name, src_config_name, dst_confi
     comment = config_dom.createComment("This file is automatically generated by the build. see indra/newview/build_win32_appConfig.py")
     config_dom.insertBefore(comment, config_dom.childNodes[0])
 
-    print "Writing: " + dst_config_name
+    print("Writing: " + dst_config_name)
     f = open(dst_config_name, 'w')
     config_dom.writexml(f)
     f.close()