Add Schema loading capabilities to SessionManager get and post

* Remove typing-extensions since it is no longer used
* move doc --> docs in pyproject.toml
* Re-factor SessionManager to leverage get / post method automatic
  Schema building.
* Add beginning of portfolio model.

pyproject.toml

@@ -39,7 +39,6 @@ python-dateutil = "^2.8"
 pytz = "^2019.3"
 requests = "^2.23"
 yarl = "^1.4.2"
-typing-extensions = "^3.7.4"
 certifi = "^2020.4.5"
 
 [tool.poetry.dev-dependencies]
@@ -67,7 +66,7 @@ xdoctest = "^0.11.0"
 towncrier = "^19.2.0"
 
 [tool.poetry.extras]
-doc = ["sphinx", "sphinx-autodoc-typehints", "sphinx_rtd_theme", "autodocsumm", "tomlkit"]
+docs = ["sphinx", "sphinx-autodoc-typehints", "sphinx_rtd_theme", "autodocsumm", "tomlkit"]
 
 [tool.black]
 include = '\.pyi?$'
@@ -86,7 +85,7 @@ exclude = '''
 
 [tool.isort]
 known_first_party = 'robinhood'
-known_third_party = ["certifi", "dateutil", "freezegun", "marshmallow", "pytest", "pytz", "requests", "requests_mock", "typing_extensions", "yarl"]
+known_third_party = ["certifi", "dateutil", "freezegun", "marshmallow", "pytest", "pytz", "requests", "requests_mock", "yarl"]
 multi_line_output = 3
 lines_after_imports = 2
 force_grid_wrap = 0

pyrh/models/__init__.py

@@ -1,7 +1,17 @@
 """pyrh models and schemas."""
 
-from .oauth import Challenge, OAuth
-from .sessionmanager import SessionManager
+from .oauth import Challenge, ChallengeSchema, OAuth, OAuthSchema
+from .portfolio import PortfolioSchema
+from .sessionmanager import SessionManager, SessionManagerSchema
 
 
-__all__ = ["OAuth", "Challenge", "SessionManager"]
+__all__ = [
+    "OAuth",
+    "OAuthSchema",
+    "Challenge",
+    "ChallengeSchema",
+    "SessionManager",
+    "SessionManagerSchema",
+    "Portfolio",
+    "PortfolioSchema",
+]

pyrh/models/portfolio.py

@@ -0,0 +1,38 @@
+"""Current portfolio."""
+
+from marshmallow import fields
+
+from .base import BaseModel, BaseSchema
+
+
+class Portfolio(BaseModel):
+    """Robinhood portfolio data class."""
+
+    pass
+
+
+class PortfolioSchema(BaseSchema):
+    """Robinhood portfolio schema data loader."""
+
+    __model__ = Portfolio
+
+    url = fields.URL()
+    account = fields.URL()
+    start_date = fields.NaiveDateTime()
+    market_value = fields.Float()
+    equity = fields.Float()
+    extended_hours_market_value = fields.Float()
+    extended_hours_equity = fields.Float()
+    extended_hours_portfolio_equity = fields.Float()
+    last_core_market_value = fields.Float()
+    last_core_equity = fields.Float()
+    last_core_portfolio_equity = fields.Float()
+    excess_margin = fields.Float()
+    excess_maintenance = fields.Float()
+    excess_margin_with_uncleared_deposits = fields.Float()
+    portfolio_equity_previous_close = fields.Float()
+    adjusted_equity_previous_close = fields.Float()
+    adjusted_portfolio_equity_previous_close = fields.Float()
+    withdrawable_amount = fields.Float()
+    unwithdrawable_deposits = fields.Float()
+    unwithdrawable_grants = fields.Float()