diff --git a/test_libs/pyspec/eth2spec/phase1/state_transition.py b/test_libs/pyspec/eth2spec/phase1/state_transition.py
index 7e6411287..87b2e1c12 100644
--- a/test_libs/pyspec/eth2spec/phase1/state_transition.py
+++ b/test_libs/pyspec/eth2spec/phase1/state_transition.py
@@ -1,11 +1,5 @@
 from . import spec
 
-from typing import (
-    Any,
-    Callable,
-    List
-)
-
 from .spec import (
     BeaconState,
     BeaconBlock,
@@ -13,18 +7,14 @@ from .spec import (
 )
 
 from eth2spec.phase0.state_transition import (
-    expected_deposit_count,
     process_operation_type,
     process_operations as process_operations_phase0,
-    process_block as process_block_phase0,
-    process_epoch_transition as process_epoch_transition_phase0,
-    state_transition_to as state_transition_to_phase0,
-    state_transition as state_transition_phase0
 )
 
+
 def process_operations(state: BeaconState, block: BeaconBlock) -> None:
     process_operations_phase0(state, block)
-    
+
     process_operation_type(
         state,
         block.body.custody_key_reveals,
@@ -39,6 +29,7 @@ def process_operations(state: BeaconState, block: BeaconBlock) -> None:
         spec.process_early_derived_secret_reveal,
     )
 
+
 def process_block(state: BeaconState,
                   block: BeaconBlock,
                   verify_state_root: bool=False) -> None:
@@ -50,6 +41,7 @@ def process_block(state: BeaconState,
     if verify_state_root:
         spec.verify_block_state_root(state, block)
 
+
 def process_epoch_transition(state: BeaconState) -> None:
     spec.process_justification_and_finalization(state)
     spec.process_crosslinks(state)
@@ -62,6 +54,7 @@ def process_epoch_transition(state: BeaconState) -> None:
     spec.process_final_updates(state)
     spec.after_process_final_updates(state)
 
+
 def state_transition_to(state: BeaconState, up_to: Slot) -> BeaconState:
     while state.slot < up_to:
         spec.cache_state(state)
@@ -74,4 +67,4 @@ def state_transition(state: BeaconState,
                      block: BeaconBlock,
                      verify_state_root: bool=False) -> BeaconState:
     state_transition_to(state, block.slot)
-    process_block(state, block, verify_state_root)
\ No newline at end of file
+    process_block(state, block, verify_state_root)
diff --git a/test_libs/pyspec/eth2spec/utils/minimal_ssz.py b/test_libs/pyspec/eth2spec/utils/minimal_ssz.py
index 8a210f41b..57d9579d9 100644
--- a/test_libs/pyspec/eth2spec/utils/minimal_ssz.py
+++ b/test_libs/pyspec/eth2spec/utils/minimal_ssz.py
@@ -8,12 +8,13 @@ ZERO_CHUNK = b'\x00' * BYTES_PER_CHUNK
 
 cached_typedefs = {}
 
+
 def SSZType(name, fields):
     class SSZObject():
-        if name != None:
+        if name is not None:
             __name__ = name
             __qualname__ = name
-        
+
         def __init__(self, **kwargs):
             for f, t in fields.items():
                 if f not in kwargs:
@@ -32,7 +33,7 @@ def SSZType(name, fields):
             for field in self.fields:
                 output.append(f'{field}: {repr(getattr(self, field))},')
             return "\n".join(output)
-        
+
         def __repr__(self):
             return name + "(**{\n    " + str(self).replace("\n", "\n    ") + "\n})"
 
@@ -43,17 +44,19 @@ def SSZType(name, fields):
             return hash_tree_root(self, self.__class__)
 
     SSZObject.fields = fields
-    
-    if name != None:
+
+    if name is not None:
         cached_typedefs[name] = SSZObject
 
     return SSZObject
 
+
 def SSZTypeExtension(original_type, new_fields):
     typedef = cached_typedefs[original_type]
     typedef.fields.update(new_fields)
     return typedef
 
+
 class Vector():
     def __init__(self, items):
         self.items = items