[EN-1570] docstrings back

Author: iamishalkin

dxfeed/core/utils/handler.pyx

@@ -5,16 +5,16 @@ from typing import Iterable
 
 
 cdef class EventHandler:
+    """
+    Master class for user defined event handlers. `update` method should be considered as abstract.
+
+    Attributes
+    ----------
+    columns: list
+        After attaching listener the field contains one-word descriptors of the values in upcoming event the order
+        coincides
+    """
     def __init__(self):
-        """
-        Master class for user defined event handlers. `update` method should be considered as abstract.
-
-        Attributes
-        ----------
-        columns: list
-            After attaching listener the field contains one-word descriptors of the values in upcoming event the order
-            coincides
-        """
         self.columns = list()
 
     cdef void cython_internal_update_method(self, event) nogil:

dxfeed/wrappers/endpoint.py

@@ -4,12 +4,21 @@
 
 
 class Endpoint(object):
+    """
+    Class for connection management. After successful creation Instance will be connected to server
+    with provided credentials
+
+    Attributes
+    ----------
+    connection_status: str
+        Status of current connection
+    address: str
+        Current connection endpoint address
+
+    """
     def __init__(self, connection_address: str = 'demo.dxfeed.com:7300', connect: bool = True):
         """
-        Class for connection management. After successful creation Instance will be connected to server
-        with provided credentials
-
-        Attributes
+        Parameters
         ----------
         connection_address: str
             One of possible connection addresses:

dxfeed/wrappers/subscription.py

@@ -6,12 +6,27 @@
 
 
 class Subscription(object):
+    """
+    Class for subscription management. Recommended to be created only via create_subscription method in Endpoint class.
+    Also stores incoming events
+
+    Attributes
+    ----------
+    event_type: str
+        One of possible event types: 'Trade', 'Quote', 'Summary', 'Profile', 'Order', 'TimeAndSale', 'Candle',
+        'TradeETH', 'SpreadOrder', 'Greeks', 'TheoPrice', 'Underlying', 'Series', 'Configuration' or ''
+    symbols: Iterable
+        Symbols of current subscription.
+
+    Note
+    ----
+    Some event types (e.g. Candle) support only timed subscription.
+
+    """
     def __init__(self, connection, event_type: str, date_time: Union[str, datetime], exact_format: bool = True):
         """
-        Class for subscription management. Recommended to be created only via create_subscription method in Endpoint class.
-        Also stores incoming events
 
-        Attributes
+        Parameters
         ----------
         connection: dxfeed.core.DXFeedPy.ConnectionClass
             Core class written in cython, that handle connection related details on the low level
@@ -23,11 +38,6 @@ def __init__(self, connection, event_type: str, date_time: Union[str, datetime],
             %Y-%m-%d %H:%M:%S.%f. If None - stream subscription will be created (non-conflated). Default - None.
         exact_format: bool
             If False no warning will be thrown in case of incomplete date_time parameter. Default - True
-
-        Note
-        ----
-        Some event types (e.g. Candle) support only timed subscription.
-
         """
         self.__event_type = event_type
         if date_time is None: