Boston Python Workshop 3/Friday/Tutorial: Difference between revisions
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* They do some useful bit of work. |
* They do some useful bit of work. |
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* They let us re-use code without having to type it out each time. |
* They let us re-use code without having to type it out each time. |
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* They take input and possibly produce output. You can assign a variable to this output. |
* They take input and possibly produce output (we say they <b>return</b> a value). You can assign a variable to this output. |
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* You call a function by using its name followed by the input in parenthesis. |
* You call a function by using its name followed by the input in parenthesis. |
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Running this assigns the type of <code>my_var</code> -- a boolean -- to <code>x</code>. |
Running this assigns the type of <code>my_var</code> -- a boolean -- to <code>x</code>. |
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We also saw the <code>str</code> function, which returns a string representations of an objects so we can print it. For example: |
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<pre> |
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age = str(23) |
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print "I am ", age, "years old." |
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</pre> |
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We can right our own functions to encapsulate bits of useful work so we can reuse them. Here's how you do it: |
We can right our own functions to encapsulate bits of useful work so we can reuse them. Here's how you do it: |
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