Clear button in calculator

[lucasbrino]

Hey! I have just started a python course and Im having a hard time to put a clear button on my calculator! Thanks for helping!
This is my code:

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import re   print("First calculator") print("Type 'quit' to exit\n")   previous = 0 run  = True   def performMath():     global run     global previous     equation = ""           if previous == 0:         equation = input("Enter equation:")     else:         equation = input(str(previous))       if equation == 'quit':         print("Goodbye, human!")         run = False     else:         equation = re.sub('[a-zA-Z:" "]', '', equation)           if previous == 0:             previous = eval(equation)         else:             previous = eval(str(previous) + equation)           print("You typed", previous)   while run:     performMath()

[jefsummers]

Look at your post. Without the indentation it is impossible to figure out what is wrong. Please repost using the python /python marks.

[t4keheart]

You already know how to use functions, why not write functions to clear/close and call them from your if/else?

like this:

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def main():    *your calculator code*    if something:       clear()    else:       close()   def clear():    print(" ")    main()   def close():    exit()   main()