Test realtime output

Author: pgleeson

examples/test_data/realtime.py

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+from pyneuroml import pynml
+
+
+command = 'python snooze.py'
+run_dir = '.'
+
+oo = pynml.execute_command_in_dir_with_realtime_output(command, run_dir, verbose=True)
+
+print(oo)

examples/test_data/snooze.py

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+import time
+
+print("zzz")
+time.sleep(1)
+print("hrnmm...")
+time.sleep(1)
+print("zzz")
+time.sleep(1)
+print("yawn...")