Covering some basic topics I haven't seen elsewhere on Cody.
Return a string that is the path to the system's current temp directory
The assert is wrong. Dirs should not be tested as equal strings - slash can be omitted.
Number of Circles in a Number
Return area of square
Produce a sine wave
Back to basics 18 - justification
Back to basics 2 - Function Path
Back to basics 25 - Valid variable names
Back to basics 13 - Input variables
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