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# TensorFlow Python API Upgrade Utility
This tool allows you to upgrade your existing TensorFlow Python scripts.
This script can be run on a single Python file:
```
tf_upgrade.py --infile foo.py --outfile foo-upgraded.py
```
It will print a list of errors it finds that it can't fix. You can also run
it on a directory tree:
```
tf_upgrade.py --intree coolcode -outtree coolcode-upgraded
```
In either case, it will also dump out a report e.g. which will detail changes
e.g.:
```
third_party/tensorflow/tools/compatibility/test_file_v0.11.py Line 125
Renamed keyword argument from `dim` to `axis`
Renamed keyword argument from `squeeze_dims` to `axis`
Old: [[1, 2, 3]], dim=1), squeeze_dims=[1]).eval(),
~~~~ ~~~~~~~~~~~~~
New: [[1, 2, 3]], axis=1), axis=[1]).eval(),
~~~~~ ~~~~~
```
## Caveats
- Don't update parts of your code manually before running this script. In
particular, functions that have had reordered arguments like `tf.concat`,
`tf.split` will cause the script to incorrectly add keyword arguments that
mismap arguments.
- This script is not able to upgrade all functions. One notable example is
`tf.reverse()` which has been changed to take a list of indices rather than
a tensor of bools. If the script detects this, it will report this to stdout
(and in the report), and you can fix it manually. For example if you have
`tf.reverse(a, [False, True, True])` you will need to manually change it to
`tf.reverse(a, [1, 2])`.
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