@@ -11,6 +11,20 @@ python <script name>
1111
1212Replace "<script name >" with the file name of the Python script that you want to run.
1313
14+ ## Declare Variables
15+ 16+ Variables hold the values that are used in your application or script. In Python,
17+ variables are not strong-typed. This means that the variables you declare,
18+ are not limited to a particular data type. However, the variable does have a
19+ value, any future changes to that value must be of the same type. So you cannot set
20+ the value of a variable to a string and then change it to a integer.
21+ 22+ ```
23+ myVariable = "red"
24+ myOtherVariable = false
25+ myOtherOtherVariable = 5
26+ ```
27+ 1428## Functions
1529
1630To write a function in Python, you start the function out with the "def" keyword.
@@ -23,6 +37,10 @@ def myFunction (param1, param2, param3):
2337 return sum
2438```
2539
40+ If you notice, there are no braces or brackets around the contents of the function.
41+ Python relies on indentation for the grouping of lines together within a given
42+ section.
43+ 2644## Random Number
2745
2846Random nubmers can be used to do countdowns or other things that are needed.
@@ -45,7 +63,6 @@ In the example above, 5 is the lower limit of the range and 60 is the upper limi
4563of the range. If your range needs to be different, then changes either or both of
4664these values.
4765
48- 4966## More Resources
5067
5168The Raspberry Pi traffic light project is written in Python code. You can review the
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