ref: replace np.string_ with np.bytes_

CHANGELOG

@@ -1,3 +1,5 @@
+0.25.1
+ - ref: replace np.string_ with np.bytes_
 0.25.0
  - feat: identify flickering in raw data via dcnum.read.detect_flickering
  - fix: handle out-of-bounds slice indexing for BaseImageChunkCache

benchmark/bm_write.py

@@ -0,0 +1,14 @@
+"""Benchmark the writer thread"""
+from dcnum import write
+
+
+def main():
+
+    thr_coll = write.QueueCollectorThread(
+        data=self.dtin,
+        event_queue=fe_kwargs["event_queue"],
+        writer_dq=writer_dq,
+        feat_nevents=fe_kwargs["feat_nevents"],
+        write_threshold=500,
+    )
+    print("hello")

src/dcnum/write/queue_collector_thread.py

@@ -147,7 +147,7 @@ def __init__(self,
               name="QueueCollector", *args, **kwargs)
         self.logger = logging.getLogger("dcnum.write.QueueCollector")
         #: HDF5 data instance
-        self.data = data
+        self.data = None
         #: Event queue from which to collect event data
         self.event_queue = event_queue
         #: Writer deque to which event arrays are appended

src/dcnum/write/writer.py

@@ -140,10 +140,10 @@ def require_feature(self,
                                                feat_dtype=feat_dtype),
                 **ds_kwds)
             if len(item_shape) == 2:
-                dset.attrs.create('CLASS', np.string_('IMAGE'))
-                dset.attrs.create('IMAGE_VERSION', np.string_('1.2'))
+                dset.attrs.create('CLASS', np.bytes_('IMAGE'))
+                dset.attrs.create('IMAGE_VERSION', np.bytes_('1.2'))
                 dset.attrs.create('IMAGE_SUBCLASS',
-                                  np.string_('IMAGE_GRAYSCALE'))
+                                  np.bytes_('IMAGE_GRAYSCALE'))
             offset = 0
         else:
             dset = egroup[feat]