Editing Boston Python Workshop 3/Friday/Tutorial

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A <b>function signature</b> tells you how the function will be called. It starts with the keyword <code>def</code>, which tells Python that you are defining a function. Then comes a space, the name of your function, an open parenthesis, the comma-separated input <b>parameters</b> for your function, a close parenthesis, and a colon. Here's what a function signature looks like for a function that takes no arguments:
 
A <b>function signature</b> tells you how the function will be called. It starts with the keyword <code>def</code>, which tells Python that you are defining a function. Then comes a space, the name of your function, an open parenthesis, the comma-separated input <b>parameters</b> for your function, a close parenthesis, and a colon. Here's what a function signature looks like for a function that takes no arguments:
  
<code>def myFunction():</code>
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<pre>
 +
def myFunction():
 +
</pre>
  
 
Here's what a function signature looks like for a function that takes one argument called <code>string</code>:
 
Here's what a function signature looks like for a function that takes one argument called <code>string</code>:
  
<code>def myFunction(string):</code>
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<pre>
 +
def myFunction(string):
 +
</pre>
  
 
And one for a function that takes two arguments:
 
And one for a function that takes two arguments:
  
<code>def myFunction(myList, myInteger):</code>
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<pre>
 +
def myFunction(myList, myInteger):
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</pre>
  
 
Parameters should have names that usefully describe what they are used for in the function.
 
Parameters should have names that usefully describe what they are used for in the function.

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