Remove unused imports, fix NotImplementedError

1 files changed, 3 insertions, 3 deletions

diff --git a/bitsandbytes/optim/sgd.py b/bitsandbytes/optim/sgd.py
index 926d804..0529879 100644
--- a/bitsandbytes/optim/sgd.py
+++ b/bitsandbytes/optim/sgd.py
@@ -9,7 +9,7 @@ class SGD(Optimizer1State):
                  weight_decay=0, nesterov=False, optim_bits=32, args=None,
             min_8bit_size=4096, percentile_clipping=100, block_wise=True):
         if momentum == 0:
-            raise NotImplementError(f'SGD without momentum is not supported!')
+            raise NotImplementedError(f'SGD without momentum is not supported!')
         super(SGD, self).__init__('momentum', params, lr, (momentum, dampening), 0.0,
                 weight_decay, optim_bits, args, min_8bit_size, percentile_clipping, block_wise)
 
@@ -18,7 +18,7 @@ class SGD8bit(Optimizer1State):
                  weight_decay=0, nesterov=False, args=None,
             min_8bit_size=4096, percentile_clipping=100, block_wise=True):
         if momentum == 0:
-            raise NotImplementError(f'SGD without momentum is not supported!')
+            raise NotImplementedError(f'SGD without momentum is not supported!')
         super(SGD8bit, self).__init__('momentum', params, lr, (momentum, dampening), 0.0,
                 weight_decay, 8, args, min_8bit_size, percentile_clipping, block_wise)
 
@@ -27,6 +27,6 @@ class SGD32bit(Optimizer1State):
                  weight_decay=0, nesterov=False, args=None,
             min_8bit_size=4096, percentile_clipping=100, block_wise=True):
         if momentum == 0:
-            raise NotImplementError(f'SGD without momentum is not supported!')
+            raise NotImplementedError(f'SGD without momentum is not supported!')
         super(SGD32bit, self).__init__('momentum', params, lr, (momentum, dampening), 0.0,
                 weight_decay, 32, args, min_8bit_size, percentile_clipping, block_wise)