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POTypeError: unsupported operand type(s) for -: 'str' and 'int' Writing a story?
 

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  1. POTypeError: unsupported operand type(s) for -: 'str' and 'int' Writing a story?
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    <p>I am trying to write a program (using Python 3.3.2) that asks for numbers then displays a story:</p> <p><a href="http://postimg.org/image/ayd5n7suv/" rel="nofollow">http://postimg.org/image/ayd5n7suv/</a></p> <p>But instead it outputs this: </p> <pre><code>Traceback (most recent call last): File "C:\Bladibla.py", line 40, in &lt;module&gt; remaining_sweets = (int(sweets) - int(swducks)*int(ducks - 1))*int(children) TypeError: unsupported operand type(s) for -: 'str' and 'int' </code></pre> <p>But I don't see any mistakes on that line. Why is this so?:</p> <pre><code>remaining_sweets = (int(sweets) - int(swducks)*int(ducks - 1))*int(children) </code></pre> <p>This is all of the code: </p> <pre><code>#Asks for number of children children = input("How many children are there?: ") if int(children) &gt; 100: print("That number is unimaginable! Please use a smaller number.") children = input("How many children are there?: ") if int(children) &lt; 0: print("That number is unimaginable! Please use a larger number.") children = input("How many children are there?: ") #Asks for number of sweets sweets = input("How many sweets do they have each?: ") if int(sweets) &gt; 100: print("If they ate that number of sweets, they would die! Please use a smaller number.") sweets = input("How many sweets do they have each?: ") if int(sweets) &lt; 0: print("How can they have a minus number of sweets? They can't vomit the sweets!!!! Please use a larger number.") sweets = input("How many sweets do they have each?: ") #Asks for number of ducks ducks = input("How many ducks were there?: ") if int(ducks) &gt; 200 : print("That's too many ducks! Please use a smaller number!") ducks = input("How many ducks were there?: ") if int(ducks) &lt; 0: print("How can there be a minus number of ducks?!! Please use a larger number") ducks = input("How many ducks were there?: ") #Asks for number of sweets gave to each duck swducks = input("How many sweets did each child give to each duck?: ") if int(swducks) &gt; 200 : print("That's too many sweets given to the ducks! Please use a smaller number!") swducks = input("How many sweets did each child give to each duck?: ") if int(swducks) &lt; 0: print("How can there be a minus number of sweets given to the ducks?!! Please use a larger number") swducks = input("How many sweets did each child give to each duck?: ") #Outputs the 'thrilling' story print("Please wait...") print("There were " + children + " children each with a bag containg " + sweets + " sweets. They walked past " + ducks + " ducks. Each child gave " + swducks + " sweets to each of the ducks and ate one themselves. They decided to put the rest into a pile.") remaining_sweets = (int(sweets) - int(swducks)*int(ducks - 1))*int(children) print("They counted the pile and found it contained " + str(remaining_sweets) + " sweets.") </code></pre> <p>Thanks in advance</p>
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    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
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    1. USMartijn Pieters
    1. USComputerXplorer
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
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    1. PO
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    1. CO`(int(sweets) - int(swducks)*(int(ducks) - 1)))*int(children)` ?
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      1. POTypeError: unsupported operand type(s) for -: 'str' and 'int' Writing a story?
      1. USkarthikr
    2. CONo, Martijn Pieters answered the question. I needed to have int(ducks) - 1 NOT int(ducks - 1)
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      1. POTypeError: unsupported operand type(s) for -: 'str' and 'int' Writing a story?
      1. USComputerXplorer
 

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