# Calculator Problem

88888 Dihedral dihedral88888 at gmail.com
Wed Feb 5 19:30:45 CET 2014

```On Monday, February 3, 2014 5:16:44 AM UTC+8, Charlie Winn wrote:
> Hey Guys i Need Help , When i run this program i get the 'None' Under the program, see what i mean by just running it , can someone help me fix this
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>     1 = float(input('First Number:'))
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>     2 = float(input('Second Number:'))
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>     print('Your Final Result is:', 1 + 2)
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> def Subtraction():
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>     print('Subtraction: What are two your numbers?')
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>     3 = float(input('First Number:'))
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>     4 = float(input('Second Number:'))
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>     print('Your Final Result is:', 3 - 4)
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> def Multiplication():
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>     print('Multiplication: What are two your numbers?')
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>     5 = float(input('First Number:'))
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>     6 = float(input('Second Number:'))
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>     print('Your Final Result is:', 5 * 6)
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>
>
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> def Division():
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>     print('Division: What are your two numbers?')
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>     7 = float(input('First Number:'))
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>     8 = float(input('Second Number:'))
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>     print('Your Final Result is:', 7 / 8)
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> print('What type of calculation would you like to do?')
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> Question = input('(Add, Subtract, Divide or Multiply)')
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> if Question.lower().startswith('a'):
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>
> elif Question.lower().startswith('s'):
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>             print(Subtraction())
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> elif Question.lower().startswith('d'):
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>             print(Division())
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> elif Question.lower().startswith('m'):
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>             print(Multiplication())
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> else:
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>         print('Please Enter The First Letter Of The Type Of Calculation You Would Like To Use')
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>
>
> while Question == 'test':
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>         Question()

I suggest just get an input string
of the  valid python expression type
first. Then just use exec and _ or
eval to get the result.

```