wire & rec_unlimited examples: Explicitly import NumPy

Author: mgeier

examples/rec_unlimited.py

@@ -38,6 +38,8 @@ def int_or_str(text):
 try:
     import sounddevice as sd
     import soundfile as sf
+    import numpy  # Make sure NumPy is loaded before it is used in the callback
+    assert numpy  # avoid "imported but unused" message (W0611)
 
     if args.list_devices:
         print(sd.query_devices())

examples/wire.py

@@ -31,6 +31,8 @@ def int_or_str(text):
 
 try:
     import sounddevice as sd
+    import numpy  # Make sure NumPy is loaded before it is used in the callback
+    assert numpy  # avoid "imported but unused" message (W0611)
 
     def callback(indata, outdata, frames, time, status):
         if status: