Tutorial :Python Application does nothing



Question:

This code stopped doing anything at all after I changed something that I no longer remember

#Dash Shell  import os  import datetime    class LocalComputer:      pass    def InitInformation():      Home = LocalComputer()      #Acquires user information      if (os.name == "nt"):          Home.ComputerName = os.getenv("COMPUTERNAME")          Home.Username = os.getenv("USERNAME")          Home.Homedir = os.getenv("HOMEPATH")      else:          Home.ComputerName = os.getenv()          Home.Username = os.getenv("USER")          Home.Homedir = os.getenv("HOME")      return Home    def MainShellLoop():      print ("--- Dash Shell ---")      Home = InitInformation()      userinput = None      currentdir = Home.Homedir      while (userinput != "exit"):          rightnow = datetime.datetime.now()          try:              userinput = input(str(Home.ComputerName) + "\\" + str(Home.Username) + ":" + str(rightnow.month) + "/" + str(rightnow.day) + "/" + str(rightnow.year) + "@" + str(currentdir))          except:              print("Invalid Command specified, please try again")    MainShellLoop()  

edit: Lol sorry guys forgot to say its supposed to run the input


Solution:1

You should better describe your problem. Does it print the input prompt? Does it output anything? Does it exit or just sit there? I noticed a few issues while reading over this code that might help. You should be using raw_input(), not input(). Also, you don't actually do anything with userinput unless it == 'exit'. Which is won't, because you are just using input(), not raw_input(), so the person would have to enter 'exit' (including quotes) or else the loop will never exit. (Assuming it's not Python 3 Code)


Solution:2

It's doing nothing because there's no code to make it do anything. Try inserting a line like

print("You entered:", userinput)  

at an appropriate place in your loop.


Solution:3

os.getenv() must have at least one param. Try os.getenv("HOST") or something.


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