Open
Description
Any strings printed before executing await session.prompt_async() don't seem to appear on the console. Is the recommended approach to perform (synchronous) initialization prior to patching stdout?
Below is a simple example, where the Unable to open serial port string is not printed at all (tested on Linux and macOS).
[...]
async def interactive_shell():
try:
ser = serial.Serial('/dev/thisportdoesntexist')
except SerialError as e:
print(f"Unable to open serial port: {e.errno}")
return
# Create Prompt.
session = PromptSession(">> ")
# Run echo loop. Read text from stdin, and reply it back.
while True:
try:
text = await session.prompt_async()
print('You said: "{0}"'.format(text))
if text == 'q' or text == 'quit':
break
except (EOFError, KeyboardInterrupt):
return
async def _main():
with patch_stdout():
try:
await interactive_shell()
finally:
print("caught")
print("Quitting event loop. Bye.")
def main():
asyncio.run(_main())