Switch to mypy part0

.gitignore

@@ -15,7 +15,7 @@ venv
 .ipynb_checkpoints
 .ruby-version
 .tox
-.pytype
+.mypy_cache/
 dist/
 pip-wheel-metadata
 server/

CONTRIBUTING.md

@@ -85,15 +85,15 @@ If your PR is greater than 500 lines, please consider splitting it into multiple
 
 #### Code style
 
-To ensure a standardized code style we recommend using formatter black. To ensure our type annotations are correct we also suggest using the type checker pytype.
+To ensure a standardized code style we recommend using formatter black. To ensure our type annotations are correct we also suggest using the type checker `mypy`.
 
 #### Formatting and Type Checking
 
 If you want to automatically format your code on every commit, you can use pre-commit. Just install it via `pip install pre-commit` and execute `pre-commit install` in the root folder. This will add a hook to the repository, which reformats files on every commit.
 
 If you want to set it up manually, install black via `pip install -r requirements-dev.txt.` To reformat files execute `make formatter`.
 
-If you want to check types on the codebase, install pytype using `pip install -r requirements-dev.txt`. To check the types execute `make types`.
+If you want to check types on the codebase, install `mypy` using `pip install -r requirements-dev.txt`. To check the types execute `make types`.
 
 The CI/CD tests that we run can be found in the [continous-integration.yml](https://github.com/RasaHQ/rasa/blob/master/.github/workflows/continous-integration.yml) file. 
 

Makefile

@@ -15,7 +15,7 @@ help:
 	@echo "    lint"
 	@echo "        Lint code with flake8, and check if black formatter should be applied."
 	@echo "    types"
-	@echo "        Check for type errors using pytype."
+	@echo "        Check for type errors using mypy."
 	@echo "    prepare-tests-ubuntu"
 	@echo "        Install system requirements for running tests on Ubuntu and Debian based systems."
 	@echo "    prepare-tests-macos"
@@ -37,7 +37,7 @@ clean:
 	find . -name '*.pyo' -exec rm -f {} +
 	find . -name '*~' -exec rm -f  {} +
 	rm -rf build/
-	rm -rf .pytype/
+	rm -rf .mypy_cache/
 	rm -rf dist/
 	rm -rf docs/build
 	rm -rf docs/.docusaurus
@@ -68,7 +68,7 @@ lint:
 	poetry run black --check rasa tests
 
 types:
-	poetry run pytype --keep-going rasa -j 16
+	poetry run mypy rasa
 
 prepare-tests-files:
 	poetry install -E spacy

README.md

@@ -251,7 +251,7 @@ make formatter
 
 #### Type Checking
 
-If you want to check types on the codebase, install `pytype` using `poetry install`.
+If you want to check types on the codebase, install `mypy` using `poetry install`.
 To check the types execute
 ```
 make types

pyproject.toml

@@ -142,14 +142,14 @@ fakeredis = "^1.4.0"
 mongomock = "^3.18.0"
 black = "^19.10b0"
 flake8 = "^3.8.3"
-pytype = "^2020.6.1"
 google-cloud-storage = "^1.29.0"
 azure-storage-blob = "<12.4.0"
 coveralls = "^2.0.0"
 towncrier = "^19.2.0"
 toml = "^0.10.0"
 pep440-version-utils = "^0.3.0"
 pydoc-markdown = "3.3.0.post1"
+mypy = "^0.782"
 
 [tool.poetry.extras]
 spacy = [ "spacy",]

rasa/core/policies/ted_policy.py

@@ -498,7 +498,7 @@ def __init__(
         self.metrics_to_log += ["loss", "acc"]
 
         # set up tf layers
-        self._tf_layers: Dict[Text : tf.keras.layers.Layer] = {}
+        self._tf_layers: Dict[Text, tf.keras.layers.Layer] = {}
         self._prepare_layers()
 
     def _check_data(self) -> None:

rasa/nlu/classifiers/diet_classifier.py

@@ -1178,7 +1178,7 @@ def __init__(
         self._entity_tag_specs = self._ordered_tag_specs(entity_tag_specs)
 
         # tf objects
-        self._tf_layers: Dict[Text : tf.keras.layers.Layer] = {}
+        self._tf_layers: Dict[Text, tf.keras.layers.Layer] = {}
         self._prepare_layers()
 
         # tf training