chore: downgrade python requirement to 3.6

Author: dovahcrow

dataprep/connector/schema/base.py

@@ -3,7 +3,6 @@
 # pylint: disable=missing-function-docstring
 
 from copy import deepcopy
-from dataclasses import dataclass
 from typing import Callable, Dict, Optional, TypeVar, cast, Any
 
 from pydantic import BaseModel  # pylint: disable=no-name-in-module
@@ -13,13 +12,16 @@
 BaseDefT = TypeVar("BaseDefT", bound="BaseDef")
 
 
-@dataclass
 class Policy:
     """Merge policy. Defines how a field can be merged."""
 
     override_none: bool = False
     merge: str = "same"  # merge policy, values: same, override, keep or None
 
+    def __init__(self, override_none: bool = False, merge: str = "same") -> None:
+        self.override_none = override_none
+        self.merge = merge
+
 
 class BaseDef(BaseModel):
     """The base definition."""

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "dataprep"
-version = "0.2.13"
+version = "0.2.13-1"
 description = "Dataprep: Data Preparation in Python"
 authors = ["SFU Database System Lab <dsl.cs.sfu@gmail.com>"]
 maintainers = [
@@ -34,28 +34,28 @@ classifiers = [
 ]
 
 [tool.poetry.dependencies]
-python = "^3.7.8"
+python = "^3.6.0"
 
 # Dependencies for EDA
 dask = { version = "~2.25", extras = [ "complete" ]}
 pandas = "~1.0"
 numpy = "~1.19"
 scipy = "~1.5"
 bokeh = "~2.0"
+nltk = "^3.5"
+wordcloud = "~1.8"
+pillow = "~7.2"
+bottleneck = "^1.3.2"
 
-# Dependencies for DataConnector
+# Dependencies for Connector
 jsonschema = "~3.2"
 requests = "~2.24"
 jinja2 = "~2.11"
 lxml = "~4.5"
-nltk = "^3.5"
-pillow = "~7.2"
-wordcloud = "~1.8"
 tqdm = "~4.48"
 tornado = "5.0.2"
 jsonpath-ng = "~1.5"
 aiohttp = "~3.6"
-bottleneck = "^1.3.2"
 stringcase = "^1.2.0"
 pydantic = "^1.6.1"