2 quick questions for python 3.x.x

[CookiezFort]

i know that you can get lower(string) in python 2.x.x but I cant find how to do that in 3.x.x

 

I am asking this because I have this simple calculator, however I want the inputs to be put in any lettercase (Uppercase or lowercase, or a mix of them) so that there will always be the output and people dont get an error when they put different 'case' letters. If i use if lower(action) == "multiplication" I get an error that says.

 

Traceback (most recent call last):
  File "C:\python\basic calculator.py", line 34, in <module>
    main()
  File "C:\python\basic calculator.py", line 7, in main
    if lower(action) == "multiplication":
NameError: name 'lower' is not defined

 

My second question Is how can i make the whole thing loop so i dont have to close the 'calculator' and then have to put run it again?

def main():    action = input("Division, multiplication, addition, substraction, square?")    n1 = float(input("What is your first number? "))     n2 = float(input("What is your second number? "))    if action == "multiplication":         print ("the product is", multiplication(n1, n2))     elif action == "division":         print ("the quotient is", division(n1, n2))      elif action == "addition":         print ("the sum is",addition(n1, n2))     elif action == "substraction":         print ("the difference is", substraction(n1, n2))    elif action == "square":        print (square(n1, n2))                                                                                                                                                  def substraction(num1, num2):     return num1-num2                                                          def addition(num1, num2):    return num1+num2                                                                                                                                             def division(num1, num2):    return num1/num2  def multiplication(num1, num2):     return num1*num2def square(num1, num2):    return num1**num2main()

[Enderman]

try like this

str = "THIS IS STRING EXAMPLE....WOW!!!";print str.lower();

and you can loop using

while True:    codecodecode    codecodecode    blahblahblah

[CookiezFort]

 

try like this

str = "THIS IS STRING EXAMPLE....WOW!!!";print str.lower();

I get invalid syntax and it highlights str

 

 

[fizzlesticks]

I get invalid syntax and it highlights str

print is a function in python 3, it should be 

print(str.lower())

 

edit: and no semicolons

[CookiezFort]

print is a function in python 3, it should be 

print(str.lower())

 

edit: and no semicolons

 

Ok, however my problem is not in like printing lower case only, but making an 'if' that takes the lowercase of an input string so that people can enter for example MultipliCatioN, or Division, instead of multiplication or division.

[fizzlesticks]

Ok, however my problem is not in like printing lower case only, but making an 'if' that takes the lowercase of an input string so that people can enter for example MultipliCatioN, or Division, instead of multiplication or division.

So instead of printing the result call .lower() on the string that is returned from input.

[CookiezFort]

So instead of printing the result call .lower() on the string that is returned from input.

 

Ok got it now thanks

[CookiezFort]

So instead of printing the result call .lower() on the string that is returned from input.

 

I also cnat find out how to make it loop after like it gave a result

[olbaze]

I also cnat find out how to make it loop after like it gave a result

 

Put lines 3-16 inside a while true block. That'll loop it until you force the program to close. If you want to implement a termination based on a special input, you can use while action != instead.