Initial commit with working sliders, knobs and mute buttons
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Mel
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main.py
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main.py
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import json
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import mido
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import subprocess
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nanoKontrol2_mapping: dict[int, str] = {
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0: "Slider_1",
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1: "Slider_2",
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2: "Slider_3",
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3: "Slider_4",
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4: "Slider_5",
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5: "Slider_6",
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6: "Slider_7",
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7: "Slider_8",
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16: "Knob_1",
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17: "Knob_2",
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18: "Knob_3",
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19: "Knob_4",
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20: "Knob_5",
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21: "Knob_6",
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22: "Knob_7",
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23: "Knob_8",
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32: "Solo_1",
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33: "Solo_2",
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34: "Solo_3",
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35: "Solo_4",
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36: "Solo_5",
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37: "Solo_6",
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38: "Solo_7",
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39: "Solo_8",
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41: "Play",
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42: "Stop",
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43: "Prev",
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44: "Next",
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45: "Record",
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46: "Cycle",
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48: "Mute_1",
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49: "Mute_2",
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50: "Mute_3",
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51: "Mute_4",
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52: "Mute_5",
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53: "Mute_6",
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54: "Mute_7",
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55: "Mute_8",
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58: "Track_prev",
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59: "Track_next",
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60: "Marker_set",
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61: "Marker_prev",
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62: "Marker_next",
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64: "Record_1",
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65: "Record_2",
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66: "Record_3",
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67: "Record_4",
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68: "Record_5",
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69: "Record_6",
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70: "Record_7",
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71: "Record_8",
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}
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audiomixer_mapping = {
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"Slider_1": "mic1.output",
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"Solo_1": "mic1.output",
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"Mute_1": "mic1.output",
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"Record_1": "mic1.output",
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"Slider_2": "mic2.output",
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"Solo_2": "mic2.output",
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"Mute_2": "mic2.output",
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"Record_2": "mic2.output",
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"Slider_3": "system.output",
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"Solo_3": "system.output",
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"Mute_3": "system.output",
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"Record_3": "system.output",
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"Slider_4": "discord.output",
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"Solo_4": "discord.output",
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"Mute_4": "discord.output",
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"Record_4": "discord.output",
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"Slider_5": "music.output",
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"Solo_5": "music.output",
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"Mute_5": "music.output",
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"Record_5": "music.output",
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"Slider_6": "music.output",
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"Solo_6": "music.output",
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"Mute_6": "music.output",
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"Record_6": "music.output",
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"Slider_7": "music.output",
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"Solo_7": "music.output",
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"Mute_7": "music.output",
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"Record_7": "music.output",
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"Slider_8": "browser.output",
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"Solo_8": "browser.output",
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"Mute_8": "browser.output",
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"Record_8": "browser.output",
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"Knob_1": "alsa_output.usb-Focusrite_Scarlett_2i2_USB_Y8T4J6E095585D-00.Direct__Direct__sink",
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"Knob_2": "alsa_output.pci-0000_10_00.4.analog-stereo",
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"Knob_3": "obs_system.output",
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"Knob_4": "obs_discord.output",
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"Knob_5": "obs_music.output",
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"Knob_8": "obs_browser.output",
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"Prev": "XF86Previous",
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"Next": "XF86Next",
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}
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sliders = [
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"Slider_1",
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"Slider_2",
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"Slider_3",
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"Slider_4",
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"Slider_5",
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"Slider_6",
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"Slider_7",
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"Slider_8",
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"Knob_1",
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"Knob_2",
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"Knob_3",
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"Knob_4",
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"Knob_5",
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"Knob_6",
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"Knob_7",
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"Knob_8",
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]
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buttons = [
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"Solo_1",
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"Mute_1",
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"Record_1",
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"Solo_2",
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"Mute_2",
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"Record_2",
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"Solo_3",
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"Mute_3",
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"Record_3",
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"Solo_4",
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"Mute_4",
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"Record_4",
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"Solo_5",
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"Mute_5",
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"Record_5",
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"Solo_6",
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"Mute_6",
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"Record_6",
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"Solo_7",
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"Mute_7",
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"Record_7",
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"Solo_8",
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"Mute_8",
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"Record_8",
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]
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pw_nodes = []
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pw_json = subprocess.run("pw-dump", capture_output=True, text=True)
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pw_data = json.loads(pw_json.stdout)
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for node in pw_data:
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if node["type"] == "PipeWire:Interface:Node":
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pw_nodes.append(node)
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def find_id(device: str) -> str:
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device_id: str = ""
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for pw_node in pw_nodes:
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if pw_node["info"]["props"]["node.name"] == device:
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device_id = str(pw_node["id"])
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# else:
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# raise NotImplementedError
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return device_id
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def set_mute(toggle: bool, device: str) -> None:
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device_id = find_id(device)
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if toggle:
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subprocess.Popen(["/usr/bin/wpctl", "set-mute", device_id, "1"])
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else:
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subprocess.Popen(["/usr/bin/wpctl", "set-mute", device_id, "0"])
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def set_volume(volume: int, device: str) -> None:
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device_id = find_id(device)
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if volume > 0:
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volume = round((volume / 127), 2)
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subprocess.Popen(["/usr/bin/wpctl", "set-volume", device_id, str(volume)])
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def main():
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# TODO threading for MIDI values;
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with mido.open_input("nanoKONTROL2:nanoKONTROL2 _ CTRL 28:0") as mixer:
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for update in mixer:
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midi_input = nanoKontrol2_mapping[update.control]
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if midi_input == "Record":
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if update.value == 127:
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set_mute(toggle=True, device=audiomixer_mapping["Knob_2"])
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else:
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set_mute(toggle=False, device=audiomixer_mapping["Knob_2"])
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if midi_input in sliders:
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set_volume(
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volume=update.value,
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device=audiomixer_mapping[nanoKontrol2_mapping[update.control]],
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)
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if midi_input in buttons:
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if midi_input.startswith("Mute") and update.value == 127:
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set_mute(toggle=True, device=audiomixer_mapping[midi_input])
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elif midi_input.startswith("Mute") and update.value == 0:
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set_mute(toggle=False, device=audiomixer_mapping[midi_input])
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# TODO parsing return to dict to split inputs
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# TODO define mixers in config files
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# TODO pipewire integration
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# TODO user config for audio streams
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# TODO running as a daemon
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# TODO systemctl unit file
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# TODO evaluating update time of script. 1ms? 0.1ms?
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if __name__ == "__main__":
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main()
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