How to use the pyperclip.set_clipboard function in pyperclip

def setupAndStart(testRoot, extraParameters=[], debugInformation=True, waitTime=DELAY_REFERENCE):
    """
    @brief setup and start netedit
    """
    if os.name == "posix":
        # to work around non working gtk clipboard
        pyperclip.set_clipboard("xclip")
    # Open Netedit
    neteditProcess = Popen(extraParameters, debugInformation)
    # atexit.register(quit, neteditProcess, False, False)
    # print debug information
    print("TestFunctions: Netedit opened successfully")
    # Wait for Netedit reference
    return neteditProcess, getReferenceMatch(neteditProcess, waitTime)

self.dqn = DQN(
            model_file_path=model_file_path if os.path.isfile(model_file_path) else None,
            input_shape=(67, 120, 8),
            input_mapping=input_mapping,
            action_space=action_space,
            replay_memory_size=1000,
            max_steps=100000,
            observe_steps=1000,
            batch_size=64,
            initial_epsilon=0.5,
            final_epsilon=0.1,
            override_epsilon=False
        )

        pyperclip.set_clipboard("xsel")
        pyperclip.copy(f"goto s.boss.{str(self.config['boss'])}")

from tornado import websocket, web, ioloop
import time
from threading import Thread
import sys
import os
from itertools import zip_longest

try:
    from tornado.platform.asyncio import AnyThreadEventLoopPolicy
    import asyncio
    asyncio.set_event_loop_policy(AnyThreadEventLoopPolicy())
except:
    pass

if os.name == 'posix':
    pyperclip.set_clipboard('xclip')

clients = []

def remove_repetition(text, n):
    if len(text) % n != 0:
        return text

    output = []
    args = [iter(text)] * n
    for group in zip_longest(*args):
        first_char = group[0]
        output.append(first_char)
        for c in group[1:]:
            if c != first_char:
                return text