2. Python

Activity: CodeLens 2.1 (cl_l38_2a_en)

• Usually, we want to repeat a series of commands several times

• One way to do this is to use a function

Activity: CodeLens 2.2 (cl_l38_2b_en)

• Don’t forget parentheses when calling the function!

• If you forget the parentheses, Python will return the memory address where the function is defined.

Activity: CodeLens 2.3 (cl_l38_2c_en)

• We can put parameters in a function

Activity: CodeLens 2.4 (cl_l38_2d_en)

• Functions cease to exist as soon as you exit the Python interpreter

• Hence, programs generally consist of modules, which are files stored on disk

• A module is a text file containing a Python program

• You can edit modules in a development environment, which highlights reserved words, performs automatic indentation, etc.

• We save a program called chaos.py

• Don’t forget the .py extension

• We can run the program with the “Run” button.

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