Merge pull request #143 from rstudio/mbh-mypy

Add mypy and address the mypy-identified sadness

Makefile

@@ -71,6 +71,7 @@ deps-%:
 lint-%:
 	$(RUNNER) 'pipenv run black --check --diff .'
 	$(RUNNER) 'pipenv run flake8 rsconnect/'
+	$(RUNNER) 'pipenv run mypy -p rsconnect'
 
 .PHONY: lint-2.7
 lint-2.7: .lint-unsupported
@@ -83,10 +84,18 @@ lint-3.5: .lint-unsupported
 	@echo ERROR: This python version cannot run the linting tools
 	@exit 1
 
-.PHONY: clean clean-stores
+.PHONY: clean
 clean:
-	@rm -rf build dist rsconnect_python.egg-info
-
+	$(RM) -r \
+		./.coverage \
+		./.mypy_cache \
+		./.pytest_cache \
+		./build \
+		./dist \
+		./htmlcov \
+		./rsconnect_python.egg-info
+
+.PHONY: clean-stores
 clean-stores:
 	@find . -name "rsconnect-python" | xargs rm -rf
 

Pipfile

@@ -10,8 +10,10 @@ flake8 = "*"
 funcsigs = "*"
 importlib-metadata = "*"
 ipython = "*"
+mypy = "*"
 pytest = "*"
 pytest-cov = "*"
+pytest-mypy = "*"
 setuptools_scm = "*"
 toml = "*"
 twine = "*"

mypy.ini

@@ -0,0 +1,3 @@
+[mypy]
+ignore_missing_imports = True
+strict_optional = False

rsconnect/actions.py

@@ -137,7 +137,7 @@ def inspect_environment(
         environment_json = check_output(args, universal_newlines=True)
     except subprocess.CalledProcessError as e:
         raise api.RSConnectException("Error inspecting environment: %s" % e.output)
-    return Environment(**json.loads(environment_json))
+    return Environment(**json.loads(environment_json))  # type: ignore
 
 
 def _verify_server(connect_server):

rsconnect/bundle.py

@@ -35,7 +35,7 @@
 
 # noinspection SpellCheckingInspection
 def make_source_manifest(entrypoint, environment, app_mode):
-    # type: (str, Environment, AppMode) -> dict
+    # type: (str, Environment, AppMode) -> typing.Dict[str, typing.Any]
     package_manager = environment.package_manager
 
     # noinspection SpellCheckingInspection
@@ -188,7 +188,7 @@ def make_notebook_source_bundle(
     environment,  # type: Environment
     extra_files=None,  # type:  typing.Optional[typing.List[str]]
 ):
-    # type: (...) -> io.BufferedRandom
+    # type: (...) -> typing.IO[bytes]
     """Create a bundle containing the specified notebook and python environment.
 
     Returns a file-like object containing the bundle tarball.
@@ -240,7 +240,7 @@ def make_notebook_html_bundle(
     python,  # type: str
     check_output=subprocess.check_output,  # type: typing.Callable
 ):
-    # type: (...) -> io.BufferedRandom
+    # type: (...) -> typing.IO[bytes]
     # noinspection SpellCheckingInspection
     cmd = [
         python,
@@ -413,7 +413,7 @@ def make_api_manifest(
     extra_files=None,  # type: typing.Optional[typing.List[str]]
     excludes=None,  # type: typing.Optional[typing.List[str]]
 ):
-    # type: (...) -> typing.Tuple[str, typing.List[str]]
+    # type: (...) -> typing.Tuple[typing.Dict[str, typing.Any], typing.List[str]]
     """
     Makes a manifest for an API.
 
@@ -444,7 +444,7 @@ def make_api_bundle(
     extra_files=None,  # type: typing.Optional[typing.List[str]]
     excludes=None,  # type: typing.Optional[typing.List[str]]
 ):
-    # type: (...) -> io.BufferedRandom
+    # type: (...) -> typing.IO[bytes]
     """
     Create an API bundle, given a directory path and a manifest.
 

rsconnect/environment.py

@@ -18,28 +18,21 @@
 exec_dir = os.path.dirname(sys.executable)
 
 
-ENVIRONMENT_FIELDS_DEFAULTS = (
-    ("conda", None),
-    ("contents", ""),
-    ("error", None),
-    ("filename", ""),
-    ("locale", ""),
-    ("package_manager", ""),
-    ("pip", None),
-    ("python", None),
-    ("source", None),
-)
-ENVIRONMENT_FIELDS = tuple([f[0] for f in ENVIRONMENT_FIELDS_DEFAULTS])
-ENVIRONMENT_DEFAULTS = tuple([f[1] for f in ENVIRONMENT_FIELDS_DEFAULTS])
-
 if sys.version_info[:2] < (3, 7):
 
-    Environment = collections.namedtuple("Environment", ENVIRONMENT_FIELDS)
-    Environment.__new__.__defaults__ = ENVIRONMENT_DEFAULTS
+    Environment = collections.namedtuple(
+        "Environment",
+        ("conda", "contents", "error", "filename", "locale", "package_manager", "pip", "python", "source",),
+    )
+    Environment.__new__.__defaults__ = (None, "", None, "", "", "", None, None, None)
 
 else:
 
-    Environment = collections.namedtuple("Environment", ENVIRONMENT_FIELDS, defaults=ENVIRONMENT_DEFAULTS,)
+    Environment = collections.namedtuple(
+        "Environment",
+        ("conda", "contents", "error", "filename", "locale", "package_manager", "pip", "python", "source",),
+        defaults=(None, "", None, "", "", "", None, None, None),
+    )
 
 
 class EnvironmentException(Exception):

rsconnect/tests/test_actions.py

@@ -1,13 +1,15 @@
 import os
 import sys
 
+try:
+    import typing
+except ImportError:
+    typing = None
+
 from os.path import dirname, join
 from unittest import TestCase
 
-try:
-    from inspect import signature
-except ImportError:
-    from funcsigs import signature
+from funcsigs import signature
 
 from rsconnect import api
 

scripts/build-image

@@ -12,7 +12,11 @@ python -m pip install --upgrade pipenv pip
 case "${PYTHON_VERSION}" in
 2*|3.5*)
   pipenv install --skip-lock --python=/usr/local/bin/python
-  pipenv run pip install funcsigs pytest pytest-cov
+  pipenv run pip install \
+    'coverage[toml]' \
+    funcsigs \
+    pytest \
+    pytest-cov
   ;;
 *)
   pipenv install --dev --python=/usr/local/bin/python

scripts/runtests

@@ -13,6 +13,6 @@ case "${PYTHON_VERSION}" in
   pytest ${PYTEST_ARGS} ./rsconnect/
   ;;
 *)
-  pipenv run pytest ${PYTEST_ARGS} ./rsconnect/
+  pipenv run pytest ${PYTEST_ARGS} --mypy ./rsconnect/
   ;;
 esac