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| public:t-vien-08-1:lab_1_materials [2008/01/09 23:55] – created hannes | public:t-vien-08-1:lab_1_materials [2024/04/29 13:33] (current) – external edit 127.0.0.1 |
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| print j | print j |
| </code> | </code> |
| - **A Class:\\ Add the class **''Tool''** to your program. This class represents a useful object that is made from some particular material. The problem is that the tool sometimes breaks when it is being used, depending on its material strength. You will simulate this behavior with this class. | - **A Class:**\\ Add the class **''Tool''** to your program. This class represents a useful object that is made from some particular material. The problem is that the tool sometimes breaks when it is being used, depending on its material strength. You will simulate this behavior with this class. |
| - Initialize the **''Tool''** class properties **''name''**, **''material''** and ''**working**'' in the constructor, with the first two being passed in and the last one set to the default value of **''True''**. | - Initialize the **''Tool''** class properties **''name''**, **''material''** and ''**working**'' in the constructor, with the first two being passed in and the last one set to the default value of **''True''**. |
| - Add the method **''use''** to the class, which prints out "I can't use this broken [name]" if the tool is not working (''working is False''), prints out "Dang! The [name] just broke!" (ands sets ''working=False'') if a test of material strength fails (see next) or prints out "The [name] really helped!" if nothing catastrophic occurs. | - Add the method **''use''** to the class, which prints out "You can't use this broken [name]" if the tool is not working (''working is False''), prints out "Dang! The [name] just broke!" (ands sets ''working=False'') if a test of material strength fails (see next) or prints out "The [name] really came in handy!" if nothing catastrophic occurs. |
| - To help with testing the material strength, declare a global dictionary called ''**material_strength**'', keyed on material names (like **''"glass", "plastic", "wood", "metal"''**) and mapping them to strength values between 0 and 100 (your choice). | - To help with testing the material strength, declare a global dictionary called ''**material_strength**'', keyed on material names (like **''"glass", "plastic", "wood", "metal"''**) and mapping them to strength values between 0 and 100 (your choice). |
| - The test in the **''use''** method of a tool fails if a random value in the 0 to 100 range is higher than the strength of the item's named material. | - The test in the **''use''** method of a tool fails if a random value in the 0 to 100 range is higher than the strength of the item's named material. |
| print mytuple[3][0] # Prints 7 | print mytuple[3][0] # Prints 7 |
| </code> | </code> |
| - Add the function **''fix''** to your program that takes in a single **''Tool''** and forces its **''working''** value to **''True''**. Declare a list of names, called **''favorites''**, and instead of quitting after 10 failed attempts at using borrowed tools, make the program fix all tools possessed by those that have their name appear on the **''favorites''** list, but not the others. Print out the names of those that got their tools fixed and let the program borrow a few more tools to see if it can now continue it's habit a bit longer. \\ \\ <code python> | - **Searching Lists:**\\ Add the function **''fix''** to your program that takes in a single **''Tool''** and forces its **''working''** value to **''True''**. Declare a list of names, called **''favorites''**, and instead of quitting after 10 failed attempts at using borrowed tools, make the program fix all tools possessed by those that have their name appear on the **''favorites''** list, but not the others. Print out the names of those that got their tools fixed and let the program borrow a few more tools to see if it can now continue it's habit a bit longer. \\ \\ <code python> |
| # HINT: Finding matches between two lists | # HINT: Finding matches between two lists |
| listA = [1, 3, 5, 7, 9] | listA = [1, 3, 5, 7, 9] |
| print str(x)+" is common!" # Prints "5 is common!, 9 is common!" | print str(x)+" is common!" # Prints "5 is common!, 9 is common!" |
| </code> | </code> |
| - Instead of using the **''favorites''**, only fix tools for those that exist in the online Símaskrá (http://www.simaskra.is). \\ \\ <code python> | - **EXTRA: Networking and XML:**\\ Instead of using the **''favorites''**, only fix tools for those that exist in the online Símaskrá (http://www.simaskra.is). \\ \\ <code python> |
| # HINT: Reading and parsing a source on the Internet | # HINT: Reading and parsing a source on the Internet |
| import urllib # Module for simple Internet sockets | import urllib # Module for simple Internet sockets |
