First steps with static type checking

Pipfile

@@ -7,9 +7,12 @@ verify_ssl = true
 black = "*"
 coverage = "*"
 django-debug-toolbar = "*"
+django-stubs = "*"
+mypy = "*"
 pre-commit = "*"
 pylint = "*"
 rope = "*"
+types-bleach = "*"
 
 [packages]
 bleach = {extras = ["css"], version = "*"}

indo/models.py

@@ -1,4 +1,7 @@
 import datetime
+
+from typing import Optional
+
 from django.core.validators import FileExtensionValidator
 from django.db import connection, models
 from django.urls import reverse
@@ -658,7 +661,7 @@ def get_absolute_url(self):
     def en_borrador(self):
         return self.estado == 'BORRADOR'
 
-    def get_pp_coordinador_or_none(self, tipo):
+    def get_pp_coordinador_or_none(self, tipo) -> Optional[ParticipanteProyecto]:
         """Busca el coordinador o coordinador_2 del proyecto"""
         try:
             return self.participantes.get(tipo_participacion_id=tipo)
@@ -796,7 +799,7 @@ def get_up_gastos(cls, anyo):
         datos_proyectos.insert(0, cabeceras)
         return datos_proyectos
 
-    def get_unidad_planificacion(self):
+    def get_unidad_planificacion(self) -> Optional[str]:
         """Devuelve el ID de la Unidad de Planificación del proyecto
 
         PIEC, PIPOUZ, PIET: UP del centro del proyecto

mypy-django.ini

@@ -0,0 +1,2 @@
+[mypy_django_plugin]
+ignore_missing_model_attributes = True

mypy.ini

@@ -0,0 +1,28 @@
+[mypy]
+# The mypy configuration file: <https://mypy.readthedocs.io/en/latest/config_file.html>
+python_version = 3.10
+
+check_untyped_defs = True
+# disallow_any_explicit = True
+disallow_any_generics = True
+disallow_untyped_calls = True
+disallow_untyped_decorators = True
+ignore_errors = False
+ignore_missing_imports = True
+implicit_reexport = False
+strict_optional = True
+strict_equality = True
+no_implicit_optional = True
+warn_unused_ignores = True
+warn_redundant_casts = True
+warn_unused_configs = True
+warn_unreachable = True
+warn_no_return = True
+
+plugins = mypy_django_plugin.main
+
+[mypy.plugins.django-stubs]
+django_settings_module = manhattan_project.settings
+
+[mypy-*.migrations.*]
+ignore_errors = True

requirements.txt

@@ -1,55 +1,55 @@
 -i https://pypi.org/simple
-asgiref==3.5.2
-attrs==22.1.0
+asgiref==3.5.2; python_version >= '3.7'
+attrs==22.1.0; python_version >= '3.5'
 bleach[css]==5.0.1
 brotli==1.0.9
 cached-property==1.5.2
-certifi==2022.6.15
+certifi==2022.6.15; python_version >= '3.6'
 cffi==1.15.1
-charset-normalizer==2.1.1
-cryptography==37.0.4
-cssselect2==0.6.0
-defusedxml==0.7.1
+charset-normalizer==2.1.1; python_version >= '3.6'
+cryptography==38.0.1; python_version >= '3.6'
+cssselect2==0.6.0; python_version >= '3.7'
+defusedxml==0.7.1; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
 django==4.1.1
 django-annoying==0.10.6
 django-crispy-forms==1.14.0
 django-filter==22.1
-django-render-block==0.9.1
+django-render-block==0.9.1; python_version >= '3.6'
 django-summernote==0.8.20.0
 django-tables2==2.4.1
 django-templated-email==3.0.0
-fonttools[woff]==4.37.1
-html5lib==1.1
+fonttools[woff]==4.37.1; python_version >= '3.7'
+html5lib==1.1; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
 huey==2.4.3
-idna==3.3
+idna==3.3; python_version >= '3.5'
 isodate==0.6.1
-lxml==4.6.5
+lxml==4.6.5; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4'
 mysqlclient==2.1.1
-oauthlib==3.2.0
-pillow==9.2.0
-platformdirs==2.5.2
-pycparser==2.21
-pydyf==0.2.0
-pyjwt==2.4.0
+oauthlib==3.2.0; python_version >= '3.6'
+pillow==9.2.0; python_version >= '3.7'
+platformdirs==2.5.2; python_version >= '3.7'
+pycparser==2.21; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
+pydyf==0.2.0; python_version >= '3.7'
+pyjwt==2.4.0; python_version >= '3.6'
 pypandoc==1.8.1
-pyphen==0.13.0
+pyphen==0.13.0; python_version >= '3.7'
 python-magic==0.4.27
 python3-openid==3.2.0
 python3-saml==1.14.0
 pytz==2022.2.1
-requests==2.28.1
+requests==2.28.1; python_version >= '3.7' and python_version < '4'
 requests-file==1.5.1
-requests-oauthlib==1.3.1
+requests-oauthlib==1.3.1; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
 requests-toolbelt==0.9.1
-six==1.16.0
+six==1.16.0; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3'
 social-auth-app-django==5.0.0
 social-auth-core[saml]==4.3.0
-sqlparse==0.4.2
+sqlparse==0.4.2; python_version >= '3.5'
 tablib==3.2.1
-tinycss2==1.1.1
-urllib3==1.26.12
+tinycss2==1.1.1; python_version >= '3.6'
+urllib3==1.26.12; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4, 3.5' and python_version < '4'
 weasyprint==56.1
 webencodings==0.5.1
-xmlsec==1.3.13
+xmlsec==1.3.13; python_version >= '3.5'
 zeep==4.1.0
 zopfli==0.2.1