title: Traceback (most recent call last): error seen on running python file in Pycharm
body: <p>Traceback (most recent call last):
    File "C:/Users/A6002043/PycharmProjects/IPT-Autobot/mybot.py", line 3, in 
      import slack
  ModuleNotFoundError: No module named 'slack'</p>
  
  <p>No code changed were made , but i did some mess up with interpreter settings after which i feel i started getting the error </p>
  
  <p>Here is the code </p>
  
  <pre><code>import os
  import re
  import slack
  import logging
  import string
  from subprocess import check_output
  import datetime
  
  @slack.RTMClient.run_on(event='message')
  def say_hello(**payload):
      try:
          ##0 get clients and payload
          logging.info('msg received')
          data = payload['data']
          web_client = payload['web_client']
          rtm_client = payload['rtm_client']
  
          ##0 - 1 Check if it is the first msg, not replied msg by me
          #print(data)
          if data.get('text') == None:
              logging.info('This msg is my replied msg.')
              return False
          ##0-2 Get channel info
          channel_id = data['channel']
          thread_ts = data['ts']
          user = data['user']
  
          ##1 get scenario submsg
          msg = data['text']
          retVal = analysis_msg(msg)
          # print(retVal)
          if retVal == False:
              retMsg = "This message is not for testing. Please check the message format.\nFEATURE_ID:SKU:FULFILLMENT"
              send_msg(web_client, channel_id, thread_ts, user, retMsg)
              return False
  
          ##2 form cmd
          retVal = form_cmd(retVal)
          print(retVal)
          if retVal == False:
              return False
  
          ##3 execute cmd
          #inform the start of test
          retMsg = "Testing is going on.... Please wait for the result."
          send_msg(web_client, channel_id, thread_ts, user, retMsg)
          try:
              res1 = check_output(retVal, shell=True).decode()
              res = reg_result(res1)
              if res == False:
                  res = "The test scenario has no correct result."
          except  Exception as ee:
              res = "The test scenario has a failure. Please Check the feature file."
  
          ## 4 send result to slack
          retMsg = "The result is here.\n" + res
          create_result_file(user, res)
          send_msg(web_client, channel_id, thread_ts, user, retMsg)
          print(retVal)
  
  
  
      except Exception as e:
          print("error")
          logging.critical(str(e))
  
  ############################    My handlers     ##############################
  def create_result_file(user, res):
      try:
          cur_time = datetime.datetime.now()
          file_name = user + str(cur_time.year)  + str(cur_time.month)  + str(cur_time.day)  + str(cur_time.hour)   + str(cur_time.minute)   + str(cur_time.second) + '.txt'
          file = open(file_name,'w')
          file.write(res)
          file.close()
      except Exception as e:
          print(str(e))
  def send_msg(web_client, channel_id, thread_ts, user, mgs):
      web_client.chat_postMessage(
          channel=channel_id,
          text=f"Hi &lt;@{user}&gt;! \n " + mgs,
          thread_ts=thread_ts
      )
  #error code mgmt.   !   reserved
  def error_code(code):
      #reserved
      return False
  
  #break donw msg to the test scenario submsgs
  def analysis_msg(msg):
      submsg = msg.split(":")
      if len(submsg) != 3:
          logging.warning("This msg not test scenario")
          return error_code("NOT_TEST_MSG")
      res = {}
      res["feature"] = submsg[0]
      res["sku"] = submsg[1]
      res["fulfillment"] = submsg[2]
      return res
  #form cmd for test bat files    !   reserved
  def form_cmd(submsg):
      #reserved
      cmd = '1.bat'
      return cmd
  
  def reg_result(res):
      #"COP Order Response"
      lines = res.split('\n')
      for line in lines:
          pattern = "COP Order Response*"
          prog = re.compile(pattern)
          result = prog.search(line)
          if result != None:
              print(result.string)
              return result.string
      return False
  slack_token = "xoxb-698180291472-694969165937-zMIG1AfrYCuUgAt44Z46tIgP";#os.environ["SLACK_API_TOKEN"]
  rtm_client = slack.RTMClient(token=slack_token)
  rtm_client.start()
  
  </code></pre>
  
  <p>Error </p>
  
  <pre><code>
  C:\Users\A6002043\PycharmProjects\IPT-Autobot\venv\Scripts\python.exe C:/Users/A6002043/PycharmProjects/IPT-Autobot/mybot.py
  Traceback (most recent call last):
    File "C:/Users/A6002043/PycharmProjects/IPT-Autobot/mybot.py", line 3, in &lt;module&gt;
      import slack
  ModuleNotFoundError: No module named 'slack'
  
  Process finished with exit code 1
  
  </code></pre>