[BEAM-2784] Fix issues from automated conversion to allow Python 2 functionality

• Type: Improvement
• Status: Resolved
• Priority: P2
• Resolution: Won't Fix
• Fix Version/s: Not applicable
• Component/s: sdk-py-core
• Assignee: Holden Karau
• Reporter: Holden Karau
• Created: 21/Aug/17 19:33
• Updated: 16/May/20 14:13
• Resolved: 19/Nov/19 18:46

Description

As part of BEAM-1251 we want to move to support a Python2/3 code base. To do this we can use futurize but futurize will break some Python2 elements. A good intermediate checkpoint is contiuing to support Python 2 after futurization from which we can build Python 3 support on top of.

Issue Links

• blocks: BEAM-1373 Update Python SDK code to support both Python 2 and 3
• blocks: BEAM-1251 Python 3 Support
• incorporates: BEAM-3552 Support Python 3 in the smaller modules
• is part of: BEAM-1251 Python 3 Support
• links to: GitHub Pull Request #3772
• links to: GitHub Pull Request #3772

Sub-Tasks

• isort and autopep8 the current Python code base: Resolved
• Apply futurize stage 1 ("safe"): Resolved
• Fix flake8 detected errors E999 (AST compile error): Resolved
• Python futurize stage 2: Resolved
• Make coders & streams work in Python 3: Resolved
• Fix proto generation in Python 3: Resolved
• Fix type inference in Python 3 for generators: Resolved
• Futurize and fix python 2 compatibility for coders package: Resolved
• Futurize and fix python 2 compatibility for examples subpackage: Resolved
• Futurize and fix python 2 compatibility for internal subpackage: Resolved
• Futurize and fix python 2 compatibility for io subpackage: Resolved
• Futurize and fix python 2 compatibility for metrics subpackage: Resolved
• Futurize and fix python 2 compatibility for options subpackage: Resolved
• Futurize and fix python 2 compatibility for runners subpackage: Resolved
• Futurize and fix python 2 compatibility for testing subpackage: Resolved
• Futurize and fix python 2 compatibility for tools subpackage: Resolved
• Futurize and fix python 2 compatibility for transforms subpackage: Resolved
• Futurize and fix python 2 compatibility for typehints subpackage: Resolved
• Futurize and fix python 2 compatibility for utils subpackage: Resolved
• Futurize and fix python 2 compatibility for unpackaged files: Resolved
• Futurize and fix python 2 compatibility for portability subpackage: Resolved
• Replace try/except imports related to Py2/3 compatibility with from past.builtins imports: Resolved