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System information

• TensorFlow version: 1.13.1
• Doc Link: https://www.tensorflow.org/api_docs/python/tf/cus

(e.g. for links and images), because some of these examples are now being rendered in the docs.

Added by @fchollet in requests for contributions.

🐛 Bug

After freezing a traced model, I expect all unnecessary tuple operations to be removed, but some remain.

To Reproduce

https://colab.research.google.com/gist/dreiss/0414c8e294e482e8a07f98990e7130fc/freezetuple.ipynb

Expected behavior

No TupleConstruct and TupleUnpack nodes.

Environment

See notebook. It reproduces on nightly as well.

Additional context

Describe the issue linked to the documentation

Videos on contributing to scikit-learn reference were created prior to renaming the branch name, and so refer to master, not main

Suggest a potential alternative/fix

In this file, under "Video Resources" section: https://github.com/scikit-learn/scikit-learn/blob/d01014c3198aafa336d9f8ed306f292d68c4a886/doc/developers/contributing.r

julia> firstindex(enumerate(1:3))
ERROR: MethodError: no method matching firstindex(::Base.Iterators.Enumerate{UnitRange{Int64}})
Closest candidates are:
  firstindex(::Any, ::Any) at abstractarray.jl:366
  firstindex(::Pair) at pair.jl:63
  firstindex(::AbstractChar) at char.jl:195
  ...

Shouldn't this be defined? The return of iterate(enumerate...) is a tuple of an index and t

Currently many more Python projects like dask and optuna are using Python type hints. With the Python package of xgboost gaining more and more features, we should also adopt mypy as a safe guard against some type errors and for better code documentation.